Were the Americas inhabited 30,000 years ago?

Were the Americas inhabited 30,000 years ago?

One of the most dramatic discoveries to fuel the debate about the date of habitation in the Americas was made in a streambed in southern Uruguay – a set of 30,000-year-old fossilised animals which show distinctive marks left by human tools . The immense significance of the discovery is that mainstream archaeology says that humans began arriving in the Americas between 13,000 and 15,000 years ago, and the Clovis people of North and Central America are generally considered the "first Americans."

The fossils were first uncovered in 1997 when severe drought led local farmers to drain a lagoon in Arroyo del Vizcaíno, which exposed many fossilised animal remains. But these weren’t just any animals. The bones were gigantic.

It wasn’t until 2011 that a team of palaeontologists managed to break their way through the bureaucratic roadblocks to excavate the site, and over the next two years they unearthed thousands of fossils. It turns out that the bones belong to giant sloths weighing up to 4 tonnes (the size of a small elephant), saber-toothed cats, oversized armadillos, and other mega fauna that roamed the Americas until around 11,000 years ago.

Hunting mega fauna. Credit: Heinrich Harder

In an analysis published in the Proceedings of the Royal Society B in November 2013, it was revealed that the fossils at Arroyo del Vizcaíno have been radiocarbon dated to between 29,000 to 30,000 years old. And, astonishingly, the bones had marks left by human tools. The team also found a potentially human-made scraper that could have been used on dry animal hides, and stone flakes. If this is indeed the case, it means that humans inhabited the Americas at least 15,000 years before previously thought.

Study co-author Richard Fariña said the strength of the evidence lies in the team's methodology and the fact that two of the bones they tested for dating also bore markings similar to those made by human tools. "The association can't be closer than it is," he said.

But of course, such dramatic findings are never accepted easily. There are already suggestions that the markings on the bones are the product of nature mimicking human tools.

Further excavations at the site are already planned and it is estimated that it could yield a thousand more bones.


    People Were Living In North America As Early As 30,000 Years Ago, New Studies Reveal

    The question of when humans first set foot in the Americas is one of the most controversial and contested debates in anthropology. Now, two new studies have weighed in with evidence that people were living on the North American continent as far back as 33,000 years ago.

    This is much earlier than previously assumed. Until recently, the commonly held view was that the earliest inhabitants in the Americas were a single group known as the "Clovis culture” that settled in the continent around 15,000-13,000 years ago. While that date has been pushed back by a number of archaeological finds in the past few decades, the currently popular date stands at around 16,000 years ago. However, the two new studies offer up evidence that pushes this date back again, this time much further.

    In the first of the two studies published in Nature, archaeologists detail excavations at Chiquihuite Cave in Zacatecas, central Mexico, which contains an array of some 2,000 stone tools, plant remains, and environmental DNA. Dating of the site suggests the cave was inhabited by humans seasonally 25,000-33,000 years ago.

    "These early visitors didn't occupy the cave continuously, we think people spent part of the year there using it as a winter or summer shelter, or as a base to hunt during migration," said Professor Eske Willerslev of St John's College, University of Cambridge. "This could be the Americas' oldest ever hotel."

    Stone tool found during excavations at a cave in Zacatecas, central Mexico, Ciprian Ardelean.

    The second study used radiocarbon from 42 archaeological sites in North America and Beringia, a land bridge that formerly linked northern Asia and North America until it became covered by sea some 11,000 years ago. Together with genetic and climatic evidence, a mathematical model showed that humans were most likely present across America before the Last Glacial Maximum about 26,000 to 19,000 years ago.

    “The First Americans are popularly believed to have arrived in the continent between 16,000 and 13,000 years ago,” said lead author Dr Lorena Becerra-Valdivia. “Our findings show evidence of humans around 15,000 years before then.”

    Not only does the new research challenge when humans first arrived in America, but it also challenges many ideas about how they reached the continent. It’s long been postulated that humans reached America by crossing the Beringia land bridge from modern-day Russia. However, the presence of early human settlements by the coast suggests that people migrated along the shores of the Pacific Ocean. If this is the case, it's fair to speculate that even older archaeological sites may have once existed along the coast, but have since become submerged by water following the rise in sea level at the end of the last Ice Age.

    The new studies are almost certainly going to prove controversial to many archeologists. Some of the data used in the second study come from a number of Brazilian archaeological sites in the state of Piauí dated to around 20,000 years ago. Although these sites have been expertly analyzed, they are hotly disputed and many argue they are too old to be considered valid.

    “[The] suggestion that the initial entry date was as far back as 33,000 years ago, which is more than double the currently popular date of around 16,000 years ago, will be very hard for most archaeologists specializing in early America to accept,” Ruth Gruhn, Professor Emerita in the Department of Anthropology at the University of Alberta, who was not involved in the research, writes in an accompanying article published in Nature.

    “There will undoubtedly be challenges to this interpretation and close examination of the site data.”

    Regardless of how these studies will go down, it’s certainly clear that the peopling of America was long before we previously believed. How long before, however, remains unclear.


    Humans First Arrived in North America 30,000 Years Ago, New Studies Suggest

    People occupied North America by roughly 11,000 BCE, but the exact timeline of how early humans first arrived on the continent is contested. Two new studies suggest that humans were living in North America as far back as 30,000 years ago—preceding some earlier estimates by more than 15,000 years.

    According to the traditional narrative, the first North Americans were big game hunters who crossed a land bridge connecting Asia to North America around 13,000 years ago. They left behind distinct, fluted arrowheads and bone and ivory tools that were dubbed “Clovis” tools. “This narrative, known as ‘Clovis-first,’ was widely accepted for most of the 20th century until new archaeological evidence showed that humans were present in the continent before Clovis,” Lorena Becerra-Valdivia, an archaeological scientist with the Universities of Oxford and New South Wales and co-author of the new studies, tells Mental Floss. “Within academia, an earlier arrival of 16,000-15,000 years ago was generally accepted.”

    Her new analysis pushes back that date by several millennia. The study, “The Timing and Effect of the Earliest Human Arrivals in North America,” published in the journal Nature, looks at radiocarbon and luminescence data from Beringia, a region that historically linked Russia and Alaska, and North America. A statistical model built with this data indicates that a significant human population was living on the continent long before the Clovis era. According to the study, these humans were likely present before, during, and after the Last Glacial Maximum—the period when ice sheets covered much of North America 26,000 to 19,000 years ago.

    Stone tool found below the Last Glacial Maximum layer. Ciprian Ardelean

    These findings also contradict the land bridge theory. Rather than making a straightforward journey from Asia to North America and populating the southern half of the continent as the Clovis people were thought to have done, the first humans may have entered the Americas by traveling down the Pacific Coast. “These are paradigm-shifting results that shape our understanding of the initial dispersal of modern humans into Americas,” Becerra-Valdivia says. “They suggest exciting and interesting possibilities for what likely was a complex and dynamic process.”

    The second, related study in Nature, ”Evidence of Human Occupation in Mexico Around the Last Glacial Maximum,” supports this new narrative. In it, researchers from institutes in Mexico, the UK, and other countries share artifacts and environmental DNA uncovered from Chiquihuite Cave—a high-altitude cave in Zacatecas, central Mexico. The tools, plant remains, and environmental DNA collected there paint of picture of human life dating back 13,000 to 30,000 years ago. The evidence shows that the site was more than just a stopping point, and the people living there had adapted to the high altitudes and harsh mountain landscape.

    The two studies not only offer insight on when the first North Americans arrived on the continent, but who they were and how they lived. The Americas would have looked a lot different to humans during the Last Glacial Maximum than they did to the Clovis people millennia later. The fact that the first North Americans left behind far fewer artifacts than the Clovis people shows that their populations stayed relatively small. “Humans at Chiquihuite Cave would have faced the harshness of the Last Glacial Maximum, the peak of the last Ice Age, which would have kept their population at a low density,” Becerra-Valdivia says. “Clovis peoples, in contrast, thrived well after the last Ice Age, expanding widely through the continent during a period of globally warmer temperatures. Their life ways and subsistence patterns, therefore, would have been very different.”


    Stone artifacts hint that humans reached the Americas surprisingly early

    Archaeologists have unearthed what appear to be stone tools, including this one, in a cave in central Mexico that date to as early as about 33,000 years ago.

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    Humans may have arrived in North America way earlier than archaeologists thought.

    Stone tools unearthed in a cave in Mexico indicate that humans could have lived in the area as early as about 33,000 years ago, researchers report online July 22 in Nature. That’s more than 10,000 years before humans are generally thought to have settled North America. This controversial discovery enters a new piece of evidence into the fierce debate about when and how the Americas were first populated.

    “A paper like this one is really stirring up the pot,” says coauthor Eske Willerslev, an evolutionary biologist at the University of Cambridge. It “will no doubt get a lot of arguments going.”

    For decades, archaeologists thought the Americas’ first residents were the Clovis people — big game hunters known for their well-crafted spearpoints who crossed a land bridge from Asia to Alaska about 13,000 years ago (SN: 8/8/18). Recent, well-accepted archaeological discoveries suggest that North America’s first settlers actually arrived a few thousand years before the rise of the Clovis culture, by about 16,000 years ago (SN: 10/24/18), says Vance Holliday, an archaeologist the University of Arizona in Tucson not involved in the new work.

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    If the new finds really are human tools, Holliday says, this would be the oldest evidence for a human-inhabited site anywhere in the Americas.

    At Chiquihuite Cave in central Mexico, archaeologists unearthed what appear to be over 1,900 stone tools. Using radiocarbon dating to determine the ages of charcoal, bone and other detritus surrounding the artifacts, the researchers determined that more than 200 of the tools were embedded in a layer of earth as old as 33,150 to 31,400 years. Other artifacts were found in a layer as fresh as about 13,000 years old.

    The tools, excavated from 2016 to 2017, do not resemble Clovis technology or any other stone tools found in the Americas, the researchers say. This haul “has a lot of small blades and small flakes that were used for cutting,” says archaeologist Ciprian Ardelean of the Autonomous University of Zacatecas in Mexico. His team also dug up squarish stone fragments that he suspects were used to make composite tools of some sort, assembled from pieces of rock stuck into wooden or bone shafts.

    “People are going to disagree about whether this qualifies as evidence” of human activity, says Loren Davis, an archaeologist at Oregon State University in Corvallis not involved in the work. “These are rocks that were broken, but … people don’t have a monopoly on the physics involved with breaking rocks.” Davis says that a closer examination of the artifacts in person or via 3-D models could convince him that they are indeed relics of human craftsmanship.

    Ben Potter, an archaeologist in Fairbanks, Alaska, affiliated with the Arctic Studies Center at Liaocheng University in China, is similarly “intrigued but unconvinced” that Chiquihuite Cave was an ancient human abode. He notes the crude shape of many of the artifacts, as well as the absence of other evidence — such as butchered animal remains or human DNA — that would peg the site as a human residence.

    Mikkel Winther Pedersen of the University of Copenhagen samples sediments in Mexico’s Chiquihuite Cave to search for traces of DNA. Finding human DNA would bolster the claim that the cave was home to ancient people, but the researchers have not yet found conclusive evidence for human DNA. Devlin A. Gandy

    Neither the tools’ shape nor the apparent lack of other human-made remains disqualifies Chiquihuite Cave as an ancient dwelling, Ardelean says. He argues that archaeologists’ expectations of what North American stone tools should look like are overly influenced by the perfection of Clovis points, which were neatly chipped from brittle stone such as jasper (SN: 4/14/17). The limestone used by the Chiquihuite Cave dwellers was more difficult to work with, he says, so it makes sense that these implements would be more rugged.

    As for corroborating evidence of human activity, Ardelean expects human DNA to turn up only in specific areas of the cave, like where people ate or relieved themselves. He and his colleagues may not have excavated those spots yet, he says. The swath of ground investigated in this dig was also far from the mouth of the cave, where ancient people would more likely have cooked, eaten, thrown out garbage and performed other daily activities, he says.

    Anthropologist Ruth Gruhn of the University of Alberta in Edmonton “wasn’t a bit surprised” at the authors’ claim of 30,000-year-old human handiwork in Mexico. This cave joins a handful of sites in Brazil that have shown evidence of human occupation more than 20,000 years ago — although those reports remain controversial (SN: 3/13/13). To convince many archaeologists that humans really were in the Americas so early, “what you need is an accumulation of sites of that antiquity,” says Gruhn, whose commentary on the new study appears in Nature.

    If there were humans in Mexico more than 30,000 years ago, that would affect what route they could have taken south from Alaska, says geologist Alia Lesnek of the University of New Hampshire in Durham. Archaeologists have thought that if humans arrived by about 16,000 years ago, they may have plodded south along the Pacific Coast (SN: 5/30/18). That’s because a narrow, inland ice-free corridor between two ice sheets covering Canada would not have had enough plants or animals to sustain human travelers. But more than 30,000 years ago, those ice sheets had not yet reached their full extent, Lesnek says, opening up the possibility of inland migration.

    Questions or comments on this article? E-mail us at [email protected]

    A version of this article appears in the August 15, 2020 issue of Science News.


    Humans Lived in North America 130,000 Years Ago, Study Claims

    Prehistoric humans — perhaps Neanderthals or another lost species — occupied what is now California some 130,000 years ago, a team of scientists reported on Wednesday.

    The bold and fiercely disputed claim, published in the journal Nature, is based on a study of mastodon bones discovered near San Diego. If the scientists are right, they would significantly alter our understanding of how humans spread around the planet.

    The earliest widely accepted evidence of people in the Americas is less than 15,000 years old. Genetic studies strongly support the idea that those people were the ancestors of living Native Americans, arriving in North America from Asia.

    If humans actually were in North America over 100,000 years earlier, they may not be related to any living group of people. Modern humans probably did not expand out of Africa until 50,000 to 80,000 years ago, recent genetic studies have shown.

    If California’s first settlers weren’t modern, then they would have to have been Neanderthals or perhaps members of another extinct human lineage.

    “It poses all sorts of questions,” said Thomas A. Deméré, a paleontologist at the San Diego Natural History Museum and a co-author of the new study. “Who were these people? What species were they?”

    Some experts were intrigued by the research, but many archaeologists strongly criticized it, saying the evidence didn’t come close to supporting such a profound conclusion.

    Image

    “I was astonished, not because it is so good but because it is so bad,” said Donald K. Grayson, an archaeologist at the University of Washington, who faulted the new study for failing to rule out more mundane explanations for markings on the bones.

    In 1992, construction workers dug up the mastodon bones while clearing earth to build a sound barrier along Route 54 in San Diego County. A team of paleontologists from the museum spent the next five months excavating the layer of sediment in which they were found.

    The team discovered more scattered bone fragments, all of which seemed to have come from a single mastodon. From the start, the remains seemed unusual.

    The thick bones were broken and smashed, and near the animal were five large rounded stones. Dr. Deméré and his colleagues invited other experts to help determine how the bones were broken apart.

    In an effort to reproduce the markings, the researchers used similar rocks to break apart fresh elephant bones in Tanzania. The bones fractured at the same angles as the ones in San Diego, they found, and the fragments scattered onto the ground in a similar pattern.

    Dr. Deméré and his colleagues rejected the idea that all these changes could be the work of predators attacking the mastodon. “It’s kind of hard to envision a carnivore strong enough to break a mastodon leg bone,” he said.

    When he and his colleagues closely examined the rocks found near the mastodon fossils, they also found scratch marks. Similar marks appeared on the rocks used to smash elephant bones. Small chips at the site fit neatly into the rocks, suggesting that they had broken off while people used them as hammers.

    The bones and rocks rested on a sandy flood plain by a meandering stream. The researchers argued that these couldn’t have been brought together by a violent current, and that people must have carried the rocks to the mastodon.

    Dr. Deméré speculated that the humans might have been trying to get marrow out of the mastodon bones to eat, while using fragments of the bones to fashion tools. There’s a great deal of evidence for that kind of activity at older sites in other parts of the world, he noted.

    Rolfe D. Mandel, a geoarchaeologist at the University of Kansas who was not involved in the study, found it hard to see how the rocks and bones could come together without the help of people. “It could not happen naturally,” he said.

    But other archaeologists said the bone fractures and rock scratches were unconvincing.

    “They present evidence that the broken stones and bones could have been broken by humans,” said Vance T. Holliday, an archaeologist at the University of Arizona. “But they don’t demonstrate that they could only be broken by humans.”

    Gary Haynes, an archaeologist at the University of Nevada, Reno, said the researchers should have ruled out more alternatives. Some of the bone fractures could have been caused by pressure from overlying sediment, he suggested.

    For years, Dr. Deméré and his colleagues struggled to figure out how long ago the mastodon died. The scientists finally contacted James B. Paces, a research geologist at the United States Geological Survey, who determined how much uranium in the bones had broken down into another element, thorium.

    That test revealed, to their surprise, that the bones were 130,000 years old. Yet the fractures suggested the bones were still fresh when they were broken with the rocks.

    Other researchers agreed that the dating methods, at least, were sound. “These results look about as good as it can get,” said Alistair W. Pike, a geochronology expert at the University of Southampton who was not involved in the new study.

    If early humans really did smash those mastodon bones 130,000 years ago, scientists will have to rethink how humans came to the Americas.

    For decades, archaeologists have searched North and South America for the oldest evidence of occupation. Last year, Canadian researchers reported that bones of caribou and other mammals found in the Yukon with cut marks, which they argue were man-made, date back 24,000 years.

    Michael R. Waters, an archaeologist at Texas A&M University, and his colleagues reported that a stone knife and mastodon bones with cut marks found in a Florida sinkhole are about 14,500 years old.

    Taken together, the findings fit what is called the Beringian Standstill hypothesis: Humans moved from Siberia onto the Bering Land Bridge linking Asia and North America about 25,000 years ago, the idea goes, but were stopped by enormous glaciers.

    After several thousand years, as glaciers receded, modern humans were able to move south.

    But the mastodon bones in San Diego are vastly older than any others said to show evidence of human manipulation — so old that they may not represent the work of our own species.

    The oldest fossils of anatomically modern humans, found in Africa, date back about 200,000 years. The ancestors of Europeans, Asians, and Australians did not expand out of Africa until somewhere between 50,000 and 80,000 years ago, according to recent studies.

    But other kinds of humans might have made the journey to North America much earlier. The ancestors of Neanderthals, for example, were outside of Africa several hundred thousand years ago, and their descendants occupied a range stretching from Spain to southern Siberia.

    Another mysterious lineage of humans, the Denisovans, split off from Neanderthals an estimated 400,000 years ago. Their remains have been found in Siberia.

    Dr. Deméré and his colleagues say only that their findings “confirm the presence of an unidentified species of Homo,” a reference to the human genus.

    To Beth Shapiro, a paleogeneticist at the University of California, Santa Cruz, the idea that Denisovans or Neanderthals could have made the trek from Asia to North America is plausible.

    Last month, she and her colleagues published a study showing that bison spread into North America over the Bering Land Bridge about 135,000 years ago. (The bridge has disappeared and reappeared over the millenniums as the climate changed.)

    “There is no reason to suspect that a human group could not have done the same,” Dr. Shapiro said. While they might be able to make the journey, however, she agreed with critics that were good reasons to be skeptical they actually did.

    “Extraordinary claims require unequivocal evidence,” Dr. Waters of Texas A&M said. Unlike the stone knife he and his colleagues found in Florida, the stones at the San Diego site are not indisputably human tools.

    “Some people are just going to say it’s impossible and turn away,” Dr. Deméré acknowledged, adding that he hoped that other archaeologists would take a close look at the evidence in San Diego for themselves.

    “We could be wrong,” he added. “But people have to be open to the possibility that humans were here this long ago.”


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    All this fresh evidence for pre-Clovis occupation of the Americas is augmented by a charming report published last week on coprolites (fossil feces) in caves in Oregon, identifying the ancient emissions as human and dating their arrival on the cave floor to over 12,000 years ago.

    Team members working at the Chiquihuite cave in Mexico. MADS THOMSEN

    Then there&rsquos Monte Verde in Chile, dated to about 14,500 years ago. And even that pales in comparison with sites such as Gault in Texas, where occupation may have begun around 26,000 years ago, and the Meadowcroft Rockshelter in Pennsylvania, where the indications date back 19,000 years ago.

    Now in central Mexico, Ciprian Ardelean and colleagues report on stone tools, plant remains and environmental DNA in Chiquihuite Cave in Zacatecas, concluding it was occupied from about 30,000 years (or 33,000 years ago, according to the statistical paper) to 13,000 years ago.

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    In other words, during the Last Glacial Maximum 26,500 to 19,000 years ago, Mexico was occupied: that pushes back putative dating for human dispersal to the region to as early as 33,000 to 31,000 years ago, the authors say.

    The cave in question is a big one with two main chambers and lies 2,740 meters (8,990 feet) above sea level and, more pertinently to their lifestyle, 1,000 meters above the valley floor below.

    What were these early settlers doing at such heights? The megafauna they loved to eat were far below, and Pleistocene-era sites tend to be rock shelters in proximity to the habitat of prey animals. The archaeologists do not suggest an explanation. It may or may not be relevant that Denisovans conferred unto some extant Asian populations, such as the Tibetans, a tolerance for high altitude.

    The archaeologists count 1,900 stone tools found in a 3-meter stratified sequence in the lofty cave, and note that the technology didn&rsquot change much over that time &ndash and that it was unique. &ldquoThe flaked artifacts reflect a technological tradition that was previously unknown, and remains mostly unchanged over the sequence,&rdquo the team writes.

    An archaeologist holding evidence for the early arrival of humans in North America. CIPRIAN ARDELEAN

    Evidently, the prehistoric denizens were picky: Of all the rock types around them, they chose to make their tools from green or blackish types of recrystallized limestone &ndash which are actually rather rare in those parts. The raw material was not found in the cave, it had to have been brought there.

    In an intriguing parallel to a (much, much older) site found in Israel, the archaeologists believe they have found evidence that the cave site served as a &ldquoschool of rock&rdquo &ndash teaching how to make stone tools. The evidence is blanks showing repeated failed blows and error repairs. This, they say, is a reliable indicator of &ldquointentionality, expert guidance and learning.&rdquo

    In any case, the stone tools attest to a unique lithic industry: nothing like it has been found in any other cultural complexes of the late Pleistocene or Early Holocene epochs in the Americas. That unique lithic technology and the unusual location of this habitat, at high altitude, suggest an unexpected level of cultural diversity.

    As for the dating of this extraordinary find, it was based on radiocarbon dating of organics: bone, charcoal and in sediment. A different technology &ndash optically stimulated luminescence &ndash was used as a control.

    As for DNA testing, the team noted a change in the plant life before and after the Late Glacial Maximum. Before and during this epoch, the area was more densely forested, including with pines. Afterward, the pines all but disappeared, though not entirely, and the dominant floral life was Agavoideae &ndash probably a type of Joshua trees &ndash and grasses.

    Team members working at Chiquihuite cave in Mexico. DEVLIN A. GANDY

    They also found charcoal fragments in all the archaeological layers, though cannot distinguish between wildfires and human-made fireplaces at the entrance of the cave. Another thing found in all layers was bat and rodent DNA.

    What they didn&rsquot find was human DNA, but that isn&rsquot unusual in such contexts &ndash and it wasn&rsquot the bats or rats that were flaking stone tools.

    It also seems likely that the region was only sparsely inhabited, by humans at least, at this early stage. And absent genetic information on the people or much else, it is impossible to suggest at this stage what happened to these people, and if the latter-day peoples of the Americas include their descendants or whether they went extinct.

    The mark of humanity: Extinction

    Separately, Lorena Becerra-Valdivia of the University of New South Wales and Thomas Higham of the University of Oxford analyzed data from 42 North American and Beringian archaeological sites to produce a statistical model of human dispersal.

    Based on the available genetic and climatic evidence, they conclude that humans were likely present in the Americas before the Last Glacial Maximum, albeit sparsely. More widespread occupation only began with a period of warming as the Ice Age waned, from about 14,700 years ago, they believe.

    They add that during the glacial maximum, the climate south of the ice sheet was relatively temperate.

    CIPRIAN ARDELEAN

    And as the humans spread, Becerra-Valdivia and Higham deduce, the megafauna died out. The two suspect this was not coincidence.

    It has been separately shown that human beings ate big animals when they could, though they would not cavil at consuming littler ones. Basically, the humans desperately needed the fat that big animals have in abundance and little animals like birds and rabbits do not.

    The extinction of most of the world&rsquos megafauna, starting around 130,000 years ago and accelerating in the late Pleistocene, cannot be blamed on one factor acting alone. Climate change surely did for some species that couldn&rsquot adapt, but there is also no question that humans were responsible for at least some cases.

    In the Americas, &ldquoHuman presence in the continent precedes the majority of the dates for the last appearances of extinct genera,&rdquo the authors write. These include the American camel which lasted through to the Clovis epoch, and mammoths: yes, we met them there and ate them. The timing of their extinction and human spread is hard to take as coincidental. &ldquoThis raises the distinct possibility that widespread human expansion in population and space was a key factor in the extinction of large terrestrial mammals,&rdquo the authors state.

    The bottom line is that the Clovis First model is dead &ndash but so are the big animals. Also, archaeologists arguing for dates of about 20,000 years for sites in Brazil seem to be vindicated, points out Prof. Ruth Gruhn of the University of Alberta in a third article on the subject published in Nature on Wednesday.

    She also suggests why no sites that old have been found north of that: because they were inundated by the rising seas as the ice sheets melted, and are now submerged and gone.


    Supporting evidence

    The bones of the mastodon were arranged at the site — known as the Cerutti Mastodon site — in such a way that suggests it wasn't done naturally. It's not believed that the humans killed the animal, however. Instead, it's likely they were breaking up the limb bones, removing parts of the bones and probably making tools with them. They also may have extracted marrow from the bones for nutrition.

    The bones also displayed spiral fractures, which suggests that they were broken while fresh and not some years later. Five large hammerstones and anvils also show wear and tear that didn't occur through geological processes, the researchers said.

    "What's truly remarkable about this site is that you can actually identify a particular hammer that was smacked on a particular anvil in a bunch of broken bones, and fragments of those hammers and anvils that can be refitted to the stones. It's very rare that you get that whole package together in one site," Fullagar said. "So the evidence at this site is truly remarkable and really does demonstrate human interference."

    In order to replicate the types of fractures, the scientists used similar tools on elephant bones, which resulted in the same spirals.

    Steve Holen, from the Center for American Paleolithic Research and a co-author, said that the breaking of the bones wasn't done by carnivore chewing or animals trampling on the bones.

    "When we eliminate all the other natural processes and we can reproduce this experiment, we have very strong evidence," he said.


    Humans may have been present in North America 15,000 years earlier than thought: study

    Ancient humans may have inhabited North America nearly 30,000 years ago, a new study suggests — twice as long as archaeologists have conventionally believed.

    Archeology holds that North America was populated about 15,000 years ago by people who crossed over a newly formed land bridge after the last Ice Age, who are known as the Clovis people because of the type of arrowheads they made.

    But a study published Wednesday in Nature details findings in a cave high in the mountains of northern Mexico that revealed nearly 2,000 stone tools. Analysis of the artifacts in Chiquihuite Cave, as well as DNA analysis of the surrounding sediments, dates humans to between 25,000 and 30,000 years ago.

    “For decades people have passionately debated when the first humans entered the Americas,” said DNA scientist Professor Eske Willerslev, of St John’s College at the University of Cambridge, in a statement. “Chiquihuite Cave will create a lot more debate, as it is the first site that dates the arrival of people to the continent to around 30,000 years ago — 15,000 years earlier than previously thought.”


    Contents

    It is not definitively known how or when Native Americans first settled the Americas and the present-day United States. The prevailing theory proposes that people from Eurasia followed game across Beringia, a land bridge that connected Siberia to present-day Alaska during the Ice Age, and then spread southward throughout the Americas. This migration may have begun as early as 30,000 years ago [3] and continued through to about 10,000 years ago, when the land bridge became submerged by the rising sea level caused by the melting glaciers. [4] [ full citation needed ] These early inhabitants, called Paleo-Indians, soon diversified into hundreds of culturally distinct nations and tribes.

    This pre-Columbian era incorporates all periods in the history of the Americas before the appearance of European influences on the American continents, spanning from the original settlement in the Upper Paleolithic period to European colonization during the early modern period. While the term technically refers to the era before Christopher Columbus' voyage in 1492, in practice the term usually includes the history of American indigenous cultures until they were conquered or significantly influenced by Europeans, even if this happened decades or centuries after Columbus's initial landing.

    Paleo-Indians Edit

    By 10,000 BCE, humans were relatively well-established throughout North America. Originally, Paleo-Indian hunted Ice Age megafauna like mammoths, but as they began to go extinct, people turned instead to bison as a food source. As time went on, foraging for berries and seeds became an important alternative to hunting. Paleo-Indians in central Mexico were the first in the Americas to farm, starting to plant corn, beans, and squash around 8,000 BCE. Eventually, the knowledge began to spread northward. By 3,000 BCE, corn was being grown in the valleys of Arizona and New Mexico, followed by primitive irrigation systems and early villages of the Hohokam. [5] [6]

    One of the earlier cultures in the present-day United States was the Clovis culture, who are primarily identified by the use of fluted spear points called the Clovis point. From 9,100 to 8,850 BCE, the culture ranged over much of North America and also appeared in South America. Artifacts from this culture were first excavated in 1932 near Clovis, New Mexico. The Folsom culture was similar, but is marked by the use of the Folsom point.

    A later migration identified by linguists, anthropologists, and archeologists occurred around 8,000 BCE. This included Na-Dene-speaking peoples, who reached the Pacific Northwest by 5,000 BCE. [7] From there, they migrated along the Pacific Coast and into the interior and constructed large multi-family dwellings in their villages, which were used only seasonally in the summer to hunt and fish, and in the winter to gather food supplies. [8] Another group, the Oshara Tradition people, who lived from 5,500 BCE to 600 CE, were part of the Archaic Southwest.

    Mound builders and pueblos Edit

    The Adena began constructing large earthwork mounds around 600 BCE. They are the earliest known people to have been Mound Builders, however, there are mounds in the United States that predate this culture. Watson Brake is an 11-mound complex in Louisiana that dates to 3,500 BCE, and nearby Poverty Point, built by the Poverty Point culture, is an earthwork complex that dates to 1,700 BCE. These mounds likely served a religious purpose.

    The Adenans were absorbed into the Hopewell tradition, a powerful people who traded tools and goods across a wide territory. They continued the Adena tradition of mound-building, with remnants of several thousand still in existence across the core of their former territory in southern Ohio. The Hopewell pioneered a trading system called the Hopewell Exchange System, which at its greatest extent ran from the present-day Southeast up to the Canadian side of Lake Ontario. [9] By 500 CE, the Hopewellians had too disappeared, absorbed into the larger Mississippian culture.

    The Mississippians were a broad group of tribes. Their most important city was Cahokia, near modern-day St. Louis, Missouri. At its peak in the 12th century, the city had an estimated population of 20,000, larger than the population of London at the time. The entire city was centered around a mound that stood 100 feet (30 m) tall. Cahokia, like many other cities and villages of the time, depended on hunting, foraging, trading, and agriculture, and developed a class system with slaves and human sacrifice that was influenced by societies to the south, like the Mayans. [5]

    In the Southwest, the Anasazi began constructing stone and adobe pueblos around 900 BCE. [10] These apartment-like structures were often built into cliff faces, as seen in the Cliff Palace at Mesa Verde. Some grew to be the size of cities, with Pueblo Bonito along the Chaco River in New Mexico once consisting of 800 rooms. [5]

    Northwest and northeast Edit

    The indigenous peoples of the Pacific Northwest were likely the most affluent Native Americans. Many distinct cultural and political nations developed there, but they all shared certain beliefs traditions, and practices, such as the centrality of salmon as a resource and spiritual symbol. Permanent villages began to develop in this region as early as 1,000 BCE, and these communities celebrated by the gift-giving feast of the potlatch. These gatherings were usually organized to commemorate special events such as the raising of a Totem pole or the celebration of a new chief.

    In present-day upstate New York, the Iroquois formed a confederacy of tribal nations in the mid-15th century, consisting of the Oneida, Mohawk, Onondaga, Cayuga, and Seneca. Their system of affiliation was a kind of federation, different from the strong, centralized European monarchies. [11] [12] [13] Each tribe had seats in a group of 50 sachem chiefs. It has been suggested that their culture contributed to political thinking during the development of the United States government. The Iroquois were powerful, waging war with many neighboring tribes, and later, Europeans. As their territory expanded, smaller tribes were forced further west, including the Osage, Kaw, Ponca, and Omaha peoples. [13] [14]

    Native Hawaiians Edit

    Polynesians began to settle in the Hawaiian Islands between the 1st and 10th centuries. Around 1200 CE, Tahitian explorers found and began settling the area as well. This marked the rise of the Hawaiian civilization, which would be largely separated from the rest of the world until the arrival of the British 600 years later. Europeans under the British explorer James Cook arrived in the Hawaiian Islands in 1778, and within five years of contact, European military technology would help Kamehameha I conquer most of the people, and eventually unify the islands for the first time establishing the Hawaiian Kingdom.

    Norse exploration Edit

    The earliest recorded European mention of America is in a historical treatise by the medieval chronicler Adam of Bremen, circa 1075, where it is referred to as Vinland. [b] It is also extensively referred to in the 13th-century Norse Vinland Sagas, which relate to events which occurred around 1000. Whilst the strongest archaeological evidence of the existence of Norse settlements in America is located in Canada, most notably at L'Anse aux Meadows and dated to circa 1000, there is significant scholarly debate as to whether Norse explorers also made landfall in New England and other east-coast areas. [16] In 1925, President Calvin Coolidge declared that a Norse explorer called Leif Erikson (c.970 – c.1020) was the first European to discover America. [17]

    After a period of exploration sponsored by major European nations, the first successful English settlement was established in 1607. Europeans brought horses, cattle, and hogs to the Americas and, in turn, took back maize, turkeys, tomatoes, potatoes, tobacco, beans, and squash to Europe. Many explorers and early settlers died after being exposed to new diseases in the Americas. However, the effects of new Eurasian diseases carried by the colonists, especially smallpox and measles, were much worse for the Native Americans, as they had no immunity to them. They suffered epidemics and died in very large numbers, usually before large-scale European settlement began. Their societies were disrupted and hollowed out by the scale of deaths. [18] [19]

    First settlements Edit

    Spanish contact Edit

    Spanish explorers were the first Europeans to reach the present-day United States, after Christopher Columbus's expeditions (beginning in 1492) established possessions in the Caribbean, including the modern-day U.S. territories of Puerto Rico, and (partly) the U.S. Virgin Islands. Juan Ponce de León landed in Florida in 1513. [20] Spanish expeditions quickly reached the Appalachian Mountains, the Mississippi River, the Grand Canyon, [21] and the Great Plains. [22]

    In 1539, Hernando de Soto extensively explored the Southeast, [22] and a year later Francisco Coronado explored from Arizona to central Kansas in search of gold. [22] Escaped horses from Coronado's party spread over the Great Plains, and the Plains Indians mastered horsemanship within a few generations. [5] Small Spanish settlements eventually grew to become important cities, such as San Antonio, Albuquerque, Tucson, Los Angeles, and San Francisco. [23]

    Dutch mid-Atlantic Edit

    The Dutch West India Company sent explorer Henry Hudson to search for a Northwest Passage to Asia in 1609. New Netherland was established in 1621 by the company to capitalize on the North American fur trade. Growth was slow at first due to mismanagement by the Dutch and Native American conflicts. After the Dutch purchased the island of Manhattan from the Native Americans for a reported price of US$24, the land was named New Amsterdam and became the capital of New Netherland. The town rapidly expanded and in the mid 1600s it became an important trading center and port. Despite being Calvinists and building the Reformed Church in America, the Dutch were tolerant of other religions and cultures and traded with the Iroquois to the north. [24]

    The colony served as a barrier to British expansion from New England, and as a result a series of wars were fought. The colony was taken over by Britain in 1664 and its capital was renamed New York City. New Netherland left an enduring legacy on American cultural and political life of religious tolerance and sensible trade in urban areas and rural traditionalism in the countryside (typified by the story of Rip Van Winkle). Notable Americans of Dutch descent include Martin Van Buren, Theodore Roosevelt, Franklin D. Roosevelt, Eleanor Roosevelt and the Frelinghuysens. [24]

    Swedish settlement Edit

    In the early years of the Swedish Empire, Swedish, Dutch, and German stockholders formed the New Sweden Company to trade furs and tobacco in North America. The company's first expedition was led by Peter Minuit, who had been governor of New Netherland from 1626 to 1631 but left after a dispute with the Dutch government, and landed in Delaware Bay in March 1638. The settlers founded Fort Christina at the site of modern-day Wilmington, Delaware, and made treaties with the indigenous groups for land ownership on both sides of the Delaware River. Over the following seventeen years, 12 more expeditions brought settlers from the Swedish Empire (which also included contemporary Finland, Estonia, and portions of Latvia, Norway, Russia, Poland, and Germany) to New Sweden. The colony established 19 permanent settlements along with many farms, extending into modern-day Maryland, Pennsylvania, and New Jersey. It was incorporated into New Netherland in 1655 after a Dutch invasion from the neighboring New Netherland colony during the Second Northern War. [25] [26]

    French and Spanish conflict Edit

    Giovanni da Verrazzano landed in North Carolina in 1524, and was the first European to sail into New York Harbor and Narragansett Bay. A decade later, Jacques Cartier sailed in search of the Northwest Passage, but instead discovered the Saint Lawrence River and laid the foundation for French colonization of the Americas in New France. After the collapse of the first Quebec colony in the 1540s, French Huguenots settled at Fort Caroline near present-day Jacksonville in Florida. In 1565, Spanish forces led by Pedro Menéndez destroyed the settlement and established the first European settlement in what would become the United States — St. Augustine.

    After this, the French mostly remained in Quebec and Acadia, but far-reaching trade relationships with Native Americans throughout the Great Lakes and Midwest spread their influence. French colonists in small villages along the Mississippi and Illinois rivers lived in farming communities that served as a grain source for Gulf Coast settlements. The French established plantations in Louisiana along with settling New Orleans, Mobile and Biloxi.

    British colonies Edit

    The English, drawn in by Francis Drake's raids on Spanish treasure ships leaving the New World, settled the strip of land along the east coast in the 1600s. The first British colony in North America was established at Roanoke by Walter Raleigh in 1585, but failed. It would be twenty years before another attempt. [5]

    The early British colonies were established by private groups seeking profit, and were marked by starvation, disease, and Native American attacks. Many immigrants were people seeking religious freedom or escaping political oppression, peasants displaced by the Industrial Revolution, or those simply seeking adventure and opportunity.

    In some areas, Native Americans taught colonists how to plant and harvest the native crops. In others, they attacked the settlers. Virgin forests provided an ample supply of building material and firewood. Natural inlets and harbors lined the coast, providing easy ports for essential trade with Europe. Settlements remained close to the coast due to this as well as Native American resistance and the Appalachian Mountains that were found in the interior. [5]

    First settlement in Jamestown Edit

    The first successful English colony, Jamestown, was established by the Virginia Company in 1607 on the James River in Virginia. The colonists were preoccupied with the search for gold and were ill-equipped for life in the New World. Captain John Smith held the fledgling Jamestown together in the first year, and the colony descended into anarchy and nearly failed when he returned to England two years later. John Rolfe began experimenting with tobacco from the West Indies in 1612, and by 1614 the first shipment arrived in London. It became Virginia's chief source of revenue within a decade.

    In 1624, after years of disease and Indian attacks, including the Powhatan attack of 1622, King James I revoked the Virginia Company's charter and made Virginia a royal colony.

    New England Edit

    New England was initially settled primarily by Puritans fleeing religious persecution. The Pilgrims sailed for Virginia on the Mayflower in 1620, but were knocked off course by a storm and landed at Plymouth, where they agreed to a social contract of rules in the Mayflower Compact. Like Jamestown, Plymouth suffered from disease and starvation, but local Wampanoag Indians taught the colonists how to farm maize.

    Plymouth was followed by the Puritans and Massachusetts Bay Colony in 1630. They maintained a charter for self-government separate from England, and elected founder John Winthrop as the governor for most of its early years. Roger Williams opposed Winthrop's treatment of Native Americans and religious intolerance, and established the colony of Providence Plantations, later Rhode Island, on the basis of freedom of religion. Other colonists established settlements in the Connecticut River Valley, and on the coasts of present-day New Hampshire and Maine. Native American attacks continued, with the most significant occurring in the 1637 Pequot War and the 1675 King Philip's War.

    New England became a center of commerce and industry due to the poor, mountainous soil making agriculture difficult. Rivers were harnessed to power grain mills and sawmills, and the numerous harbors facilitated trade. Tight-knit villages developed around these industrial centers, and Boston became one of America's most important ports.

    Middle colonies Edit

    In the 1660s, the Middle Colonies of New York, New Jersey, and Delaware were established in the former Dutch New Netherland, and were characterized by a large degree of ethnic and religious diversity. At the same time, the Iroquois of New York, strengthened by years of fur trading with Europeans, formed the powerful Iroquois Confederacy.

    The last colony in this region was Pennsylvania, established in 1681 by William Penn as a home for religious dissenters, including Quakers, Methodists, and the Amish. [28] The capital of the colony, Philadelphia, became a dominant commercial center in a few short years, with busy docks and brick houses. While Quakers populated the city, German immigrants began to flood into the Pennsylvanian hills and forests, while the Scots-Irish pushed into the far western frontier.

    Southern colonies Edit

    The extremely rural Southern Colonies contrasted greatly with the north. Outside of Virginia, the first British colony south of New England was Maryland, established as a Catholic haven in 1632. The economy of these two colonies was built entirely on yeoman farmers and planters. The planters established themselves in the Tidewater region of Virginia, establishing massive plantations with slave labor, while the small-scale farmers made their way into political office.

    In 1670, the Province of Carolina was established, and Charleston became the region's great trading port. While Virginia's economy was based on tobacco, Carolina was much more diversified, exporting rice, indigo, and lumber as well. In 1712 the colony was split in two, creating North and South Carolina. The Georgia Colony – the last of the Thirteen Colonies – was established by James Oglethorpe in 1732 as a border to Spanish Florida and a reform colony for former prisoners and the poor. [28]

    Religion Edit

    Religiosity expanded greatly after the First Great Awakening, a religious revival in the 1740s which was led by preachers such as Jonathan Edwards and George Whitefield. American Evangelicals affected by the Awakening added a new emphasis on divine outpourings of the Holy Spirit and conversions that implanted new believers with an intense love for God. Revivals encapsulated those hallmarks and carried the newly created evangelicalism into the early republic, setting the stage for the Second Great Awakening in the late 1790s. [29] In the early stages, evangelicals in the South, such as Methodists and Baptists, preached for religious freedom and abolition of slavery they converted many slaves and recognized some as preachers.

    Government Edit

    Each of the 13 American colonies had a slightly different governmental structure. Typically, a colony was ruled by a governor appointed from London who controlled the executive administration and relied upon a locally elected legislature to vote on taxes and make laws. By the 18th century, the American colonies were growing very rapidly as a result of low death rates along with ample supplies of land and food. The colonies were richer than most parts of Britain, and attracted a steady flow of immigrants, especially teenagers who arrived as indentured servants. [30]

    Servitude and slavery Edit

    Over half of all European immigrants to Colonial America arrived as indentured servants. [31] Few could afford the cost of the journey to America, and so this form of unfree labor provided a means to immigrate. Typically, people would sign a contract agreeing to a set term of labor, usually four to seven years, and in return would receive transport to America and a piece of land at the end of their servitude. In some cases, ships' captains received rewards for the delivery of poor migrants, and so extravagant promises and kidnapping were common. The Virginia Company and the Massachusetts Bay Company also used indentured servant labor. [5]

    The first African slaves were brought to Virginia [32] in 1619, [33] just twelve years after the founding of Jamestown. Initially regarded as indentured servants who could buy their freedom, the institution of slavery began to harden and the involuntary servitude became lifelong [33] as the demand for labor on tobacco and rice plantations grew in the 1660s. [ citation needed ] Slavery became identified with brown skin color, at the time seen as a "black race", and the children of slave women were born slaves (partus sequitur ventrem). [33] By the 1770s African slaves comprised a fifth of the American population.

    The question of independence from Britain did not arise as long as the colonies needed British military support against the French and Spanish powers. Those threats were gone by 1765. However, London continued to regard the American colonies as existing for the benefit of the mother country in a policy known as mercantilism. [30]

    Colonial America was defined by a severe labor shortage that used forms of unfree labor, such as slavery and indentured servitude. The British colonies were also marked by a policy of avoiding strict enforcement of parliamentary laws, known as salutary neglect. This permitted the development of an American spirit distinct from that of its European founders. [34]

    An upper-class emerged in South Carolina and Virginia, with wealth based on large plantations operated by slave labor. A unique class system operated in upstate New York, where Dutch tenant farmers rented land from very wealthy Dutch proprietors, such as the Van Rensselaer family. The other colonies were more egalitarian, with Pennsylvania being representative. By the mid-18th century Pennsylvania was basically a middle-class colony with limited respect for its small upper-class. A writer in the Pennsylvania Journal in 1756 wrote:

    The People of this Province are generally of the middling Sort, and at present pretty much upon a Level. They are chiefly industrious Farmers, Artificers or Men in Trade they enjoy in are fond of Freedom, and the meanest among them thinks he has a right to Civility from the greatest. [35]

    Political integration and autonomy Edit

    The French and Indian War (1754–1763), part of the larger Seven Years' War, was a watershed event in the political development of the colonies. The influence of the French and Native Americans, the main rivals of the British Crown in the colonies and Canada, was significantly reduced and the territory of the Thirteen Colonies expanded into New France, both in Canada and Louisiana. The war effort also resulted in greater political integration of the colonies, as reflected in the Albany Congress and symbolized by Benjamin Franklin's call for the colonies to "Join, or Die." Franklin was a man of many inventions – one of which was the concept of a United States of America, which emerged after 1765 and would be realized a decade later. [36]

    Taxation without representation Edit

    Following Britain's acquisition of French territory in North America, King George III issued the Royal Proclamation of 1763, with the goal of organizing the new North American empire and protecting the Native Americans from colonial expansion into western lands beyond the Appalachian Mountains. In the following years, strains developed in the relations between the colonists and the Crown. The British Parliament passed the Stamp Act of 1765, imposing a tax on the colonies, without going through the colonial legislatures. The issue was drawn: did Parliament have the right to tax Americans who were not represented in it? Crying "No taxation without representation", the colonists refused to pay the taxes as tensions escalated in the late 1760s and early 1770s. [37]

    The Boston Tea Party in 1773 was a direct action by activists in the town of Boston to protest against the new tax on tea. Parliament quickly responded the next year with the Intolerable Acts, stripping Massachusetts of its historic right of self-government and putting it under military rule, which sparked outrage and resistance in all thirteen colonies. Patriot leaders from every colony convened the First Continental Congress to coordinate their resistance to the Intolerable Acts. The Congress called for a boycott of British trade, published a list of rights and grievances, and petitioned the king to rectify those grievances. [38] This appeal to the Crown had no effect, though, and so the Second Continental Congress was convened in 1775 to organize the defense of the colonies against the British Army.

    Common people became insurgents against the British even though they were unfamiliar with the ideological rationales being offered. They held very strongly a sense of "rights" that they felt the British were deliberately violating – rights that stressed local autonomy, fair dealing, and government by consent. They were highly sensitive to the issue of tyranny, which they saw manifested by the arrival in Boston of the British Army to punish the Bostonians. This heightened their sense of violated rights, leading to rage and demands for revenge, and they had faith that God was on their side. [39]

    The American Revolutionary War began at Lexington and Concord in Massachusetts in April 1775 when the British tried to seize ammunition supplies and arrest the Patriot leaders. In terms of political values, the Americans were largely united on a concept called Republicanism, which rejected aristocracy and emphasized civic duty and a fear of corruption. For the Founding Fathers, according to one team of historians, "republicanism represented more than a particular form of government. It was a way of life, a core ideology, an uncompromising commitment to liberty, and a total rejection of aristocracy." [40]

    The Thirteen Colonies began a rebellion against British rule in 1775 and proclaimed their independence in 1776 as the United States of America. In the American Revolutionary War (1775–1783) the Americans captured the British invasion army at Saratoga in 1777, secured the Northeast and encouraged the French to make a military alliance with the United States. France brought in Spain and the Netherlands, thus balancing the military and naval forces on each side as Britain had no allies. [41]

    George Washington Edit

    General George Washington proved an excellent organizer and administrator who worked successfully with Congress and the state governors, selecting and mentoring his senior officers, supporting and training his troops, and maintaining an idealistic Republican Army. His biggest challenge was logistics because neither Congress nor the states had the funding to provide adequately for the equipment, munitions, clothing, paychecks, or even the food supply of the soldiers.

    As a battlefield tactician, Washington often was outmaneuvered by his British counterparts. As a strategist, however, he had a better idea of how to win the war than they did. The British sent four invasion armies. Washington's strategy forced the first army out of Boston in 1776, and was responsible for the surrender of the second and third armies at Saratoga (1777) and Yorktown (1781). He limited the British control to New York City and a few places while keeping Patriot control of the great majority of the population. [42]

    Loyalists and Britain Edit

    The Loyalists, whom the British counted upon heavily, comprised about 20% of the population but suffered weak organization. As the war ended, the final British army sailed out of New York City in November 1783, taking the Loyalist leadership with them. Washington unexpectedly then, instead of seizing power for himself, retired to his farm in Virginia. [42] Political scientist Seymour Martin Lipset observes, "The United States was the first major colony successfully to revolt against colonial rule. In this sense, it was the first 'new nation'." [43]

    Declaration of Independence Edit

    On July 2, 1776, the Second Continental Congress, meeting in Philadelphia, declared the independence of the colonies by adopting the resolution from Richard Henry Lee, that stated:

    That these United Colonies are, and of right ought to be, free and independent States, that they are absolved from all allegiance to the British Crown, and that all political connection between them and the State of Great Britain is, and ought to be, totally dissolved that measures should be immediately taken for procuring the assistance of foreign powers, and a Confederation be formed to bind the colonies more closely together.

    On July 4, 1776, they adopted the Declaration of Independence and this date is celebrated as the nation's birthday. Congress shortly thereafter officially changed the nation's name to the "United States of America" from the "United Colonies of America". [44]

    The new nation was founded on Enlightenment ideals of liberalism and what Thomas Jefferson called the unalienable rights to "life, liberty and the pursuit of happiness". It was dedicated strongly to republican principles, which emphasized that people are sovereign (not hereditary kings), demanded civic duty, feared corruption, and rejected any aristocracy. [45]

    Confederation and constitution Edit

    In the 1780s the national government was able to settle the issue of the western regions of the young United States, which were ceded by the states to Congress and became territories. With the migration of settlers to the Northwest, soon they became states. Nationalists worried that the new nation was too fragile to withstand an international war, or even internal revolts such as the Shays' Rebellion of 1786 in Massachusetts. [46]

    Nationalists – most of them war veterans – organized in every state and convinced Congress to call the Philadelphia Convention in 1787. The delegates from every state wrote a new Constitution that created a much more powerful and efficient central government, one with a strong president, and powers of taxation. The new government reflected the prevailing republican ideals of guarantees of individual liberty and of constraining the power of government through a system of separation of powers. [46]

    The Congress was given authority to ban the international slave trade after 20 years (which it did in 1807). A compromise gave the South Congressional apportionment out of proportion to its free population by allowing it to include three-fifths of the number of slaves in each state's total population. This provision increased the political power of southern representatives in Congress, especially as slavery was extended into the Deep South through removal of Native Americans and transportation of slaves by an extensive domestic trade.

    To assuage the Anti-Federalists who feared a too-powerful national government, the nation adopted the United States Bill of Rights in 1791. Comprising the first ten amendments of the Constitution, it guaranteed individual liberties such as freedom of speech and religious practice, jury trials, and stated that citizens and states had reserved rights (which were not specified). [47]

    President George Washington Edit

    George Washington – a renowned hero of the American Revolutionary War, commander-in-chief of the Continental Army, and president of the Constitutional Convention – became the first President of the United States under the new Constitution in 1789. The national capital moved from New York to Philadelphia in 1790 and finally settled in Washington DC in 1800.

    The major accomplishments of the Washington Administration were creating a strong national government that was recognized without question by all Americans. [48] His government, following the vigorous leadership of Treasury Secretary Alexander Hamilton, assumed the debts of the states (the debt holders received federal bonds), created the Bank of the United States to stabilize the financial system, and set up a uniform system of tariffs (taxes on imports) and other taxes to pay off the debt and provide a financial infrastructure. To support his programs Hamilton created a new political party – the first in the world based on voters – the Federalist Party.

    Two-party system Edit

    Thomas Jefferson and James Madison formed an opposition Republican Party (usually called the Democratic-Republican Party by political scientists). Hamilton and Washington presented the country in 1794 with the Jay Treaty that reestablished good relations with Britain. The Jeffersonians vehemently protested, and the voters aligned behind one party or the other, thus setting up the First Party System. Federalists promoted business, financial and commercial interests and wanted more trade with Britain. Republicans accused the Federalists of plans to establish a monarchy, turn the rich into a ruling class, and making the United States a pawn of the British. [49] The treaty passed, but politics became intensely heated. [50]

    Challenges to the federal government Edit

    Serious challenges to the new federal government included the Northwest Indian War, the ongoing Cherokee–American wars, and the 1794 Whiskey Rebellion, in which western settlers protested against a federal tax on liquor. Washington called the state militia and personally led an army against the settlers, as the insurgents melted away and the power of the national government was firmly established. [42]

    Washington refused to serve more than two terms – setting a precedent – and in his famous farewell address, he extolled the benefits of federal government and importance of ethics and morality while warning against foreign alliances and the formation of political parties. [51]

    John Adams, a Federalist, defeated Jefferson in the 1796 election. War loomed with France and the Federalists used the opportunity to try to silence the Republicans with the Alien and Sedition Acts, build up a large army with Hamilton at the head, and prepare for a French invasion. However, the Federalists became divided after Adams sent a successful peace mission to France that ended the Quasi-War of 1798. [49] [52]

    Increasing demand for slave labor Edit

    During the first two decades after the Revolutionary War, there were dramatic changes in the status of slavery among the states and an increase in the number of freed blacks. Inspired by revolutionary ideals of the equality of men and influenced by their lesser economic reliance on slavery, northern states abolished slavery.

    States of the Upper South made manumission easier, resulting in an increase in the proportion of free blacks in the Upper South (as a percentage of the total non-white population) from less than one percent in 1792 to more than 10 percent by 1810. By that date, a total of 13.5 percent of all blacks in the United States were free. [53] After that date, with the demand for slaves on the rise because of the Deep South's expanding cotton cultivation, the number of manumissions declined sharply and an internal U.S. slave trade became an important source of wealth for many planters and traders.

    In 1807, Congress severed the U.S.'s involvement with the Atlantic slave trade. [54]

    Louisiana and Jeffersonian republicanism Edit

    Thomas Jefferson defeated Adams for the presidency in the 1800 election.

    Jefferson's major achievement as president was the Louisiana Purchase in 1803, which provided U.S. settlers with vast potential for expansion west of the Mississippi River. [55]

    Jefferson, a scientist, supported expeditions to explore and map the new domain, most notably the Lewis and Clark Expedition. [56] Jefferson believed deeply in republicanism and argued it should be based on the independent yeoman farmer and planter he distrusted cities, factories and banks. He also distrusted the federal government and judges, and tried to weaken the judiciary. However he met his match in John Marshall, a Federalist from Virginia. Although the Constitution specified a Supreme Court, its functions were vague until Marshall, the Chief Justice (1801–1835), defined them, especially the power to overturn acts of Congress or states that violated the Constitution, first enunciated in 1803 in Marbury v. Madison. [57]

    War of 1812 Edit

    Americans were increasingly angry at the British violation of American ships' neutral rights to hurt France, the impressment (seizure) of 10,000 American sailors needed by the Royal Navy to fight Napoleon, and British support for hostile Indians attacking American settlers in the Midwest with the goal of creating a pro-British Indian barrier state to block American expansion westward. They may also have desired to annex all or part of British North America, although this is still heavily debated. [58] [59] [60] [61] [62] Despite strong opposition from the Northeast, especially from Federalists who did not want to disrupt trade with Britain, Congress declared war on June 18, 1812. [63]

    The war was frustrating for both sides. Both sides tried to invade the other and were repulsed. The American high command remained incompetent until the last year. The American militia proved ineffective because the soldiers were reluctant to leave home and efforts to invade Canada repeatedly failed. The British blockade ruined American commerce, bankrupted the Treasury, and further angered New Englanders, who smuggled supplies to Britain. The Americans under General William Henry Harrison finally gained naval control of Lake Erie and defeated the Indians under Tecumseh in Canada, [65] while Andrew Jackson ended the Indian threat in the Southeast. The Indian threat to expansion into the Midwest was permanently ended. The British invaded and occupied much of Maine.

    The British raided and burned Washington, but were repelled at Baltimore in 1814 – where the "Star Spangled Banner" was written to celebrate the American success. In upstate New York a major British invasion of New York State was turned back at the Battle of Plattsburgh. Finally in early 1815 Andrew Jackson decisively defeated a major British invasion at the Battle of New Orleans, making him the most famous war hero. [66]

    With Napoleon (apparently) gone, the causes of the war had evaporated and both sides agreed to a peace that left the prewar boundaries intact. Americans claimed victory on February 18, 1815 as news came almost simultaneously of Jackson's victory of New Orleans and the peace treaty that left the prewar boundaries in place. Americans swelled with pride at success in the "second war of independence" the naysayers of the antiwar Federalist Party were put to shame and the party never recovered. Britain never achieved the war goal of granting the Indians a barrier state to block further American settlement and this allowed settlers to pour into the Midwest without fear of a major threat. [66] The War of 1812 also destroyed America's negative perception of a standing army, which was proved useful in many areas against the British as opposed to ill-equipped and poorly-trained militias in the early months of the war, and War Department officials instead decided to place regular troops as the nation's main defense. [67]

    Second Great Awakening Edit

    The Second Great Awakening was a Protestant revival movement that affected the entire nation during the early 19th century and led to rapid church growth. The movement began around 1790, gained momentum by 1800, and, after 1820 membership rose rapidly among Baptist and Methodist congregations, whose preachers led the movement. It was past its peak by the 1840s. [68]

    It enrolled millions of new members in existing evangelical denominations and led to the formation of new denominations. Many converts believed that the Awakening heralded a new millennial age. The Second Great Awakening stimulated the establishment of many reform movements – including abolitionism and temperance designed to remove the evils of society before the anticipated Second Coming of Jesus Christ. [69]

    Era of Good Feelings Edit

    As strong opponents of the war, the Federalists held the Hartford Convention in 1814 that hinted at disunion. National euphoria after the victory at New Orleans ruined the prestige of the Federalists and they no longer played a significant role as a political party. [70] President Madison and most Republicans realized they were foolish to let the Bank of the United States close down, for its absence greatly hindered the financing of the war. So, with the assistance of foreign bankers, they chartered the Second Bank of the United States in 1816. [71] [72]

    The Republicans also imposed tariffs designed to protect the infant industries that had been created when Britain was blockading the U.S. With the collapse of the Federalists as a party, the adoption of many Federalist principles by the Republicans, and the systematic policy of President James Monroe in his two terms (1817–1825) to downplay partisanship, the nation entered an Era of Good Feelings, with far less partisanship than before (or after), and closed out the First Party System. [71] [72]

    The Monroe Doctrine, expressed in 1823, proclaimed the United States' opinion that European powers should no longer colonize or interfere in the Americas. This was a defining moment in the foreign policy of the United States. The Monroe Doctrine was adopted in response to American and British fears over Russian and French expansion into the Western Hemisphere. [73]

    In 1832, President Andrew Jackson, 7th President of the United States, ran for a second term under the slogan "Jackson and no bank" and did not renew the charter of the Second Bank of the United States of America, ending the Bank in 1836. [74] Jackson was convinced that central banking was used by the elite to take advantage of the average American, and instead implemented state banks, popularly known as "pet banks". [74]

    Indian removal Edit

    In 1830, Congress passed the Indian Removal Act, which authorized the president to negotiate treaties that exchanged Native American tribal lands in the eastern states for lands west of the Mississippi River. [75] Its goal was primarily to remove Native Americans, including the Five Civilized Tribes, from the American Southeast they occupied land that settlers wanted. Jacksonian Democrats demanded the forcible removal of native populations who refused to acknowledge state laws to reservations in the West Whigs and religious leaders opposed the move as inhumane. Thousands of deaths resulted from the relocations, as seen in the Cherokee Trail of Tears. [76] The Trail of Tears resulted in approximately 2,000–8,000 of the 16,543 relocated Cherokee perishing along the way. [77] [ full citation needed ] [78] Many of the Seminole Indians in Florida refused to move west they fought the Army for years in the Seminole Wars.

    Second party system Edit

    After the First Party System of Federalists and Republicans withered away in the 1820s, the stage was set for the emergence of a new party system based on well organized local parties that appealed for the votes of (almost) all adult white men. The former Jeffersonian (Democratic-Republican) party split into factions. They split over the choice of a successor to President James Monroe, and the party faction that supported many of the old Jeffersonian principles, led by Andrew Jackson and Martin Van Buren, became the Democratic Party. As Norton explains the transformation in 1828:

    Jacksonians believed the people's will had finally prevailed. Through a lavishly financed coalition of state parties, political leaders, and newspaper editors, a popular movement had elected the president. The Democrats became the nation's first well-organized national party, and tight party organization became the hallmark of nineteenth-century American politics. [79]

    Opposing factions led by Henry Clay helped form the Whig Party. The Democratic Party had a small but decisive advantage over the Whigs until the 1850s, when the Whigs fell apart over the issue of slavery.

    Behind the platforms issued by state and national parties stood a widely shared political outlook that characterized the Democrats:

    The Democrats represented a wide range of views but shared a fundamental commitment to the Jeffersonian concept of an agrarian society. They viewed the central government as the enemy of individual liberty. The 1824 "corrupt bargain" had strengthened their suspicion of Washington politics. … Jacksonians feared the concentration of economic and political power. They believed that government intervention in the economy benefited special-interest groups and created corporate monopolies that favored the rich. They sought to restore the independence of the individual (the "common man," i.e. the artisan and the ordinary farmer) by ending federal support of banks and corporations and restricting the use of paper currency, which they distrusted. Their definition of the proper role of government tended to be negative, and Jackson's political power was largely expressed in negative acts. He exercised the veto more than all previous presidents combined. Jackson and his supporters also opposed reform as a movement. Reformers eager to turn their programs into legislation called for a more active government. But Democrats tended to oppose programs like educational reform and the establishment of a public education system. They believed, for instance, that public schools restricted individual liberty by interfering with parental responsibility and undermined freedom of religion by replacing church schools. Nor did Jackson share reformers' humanitarian concerns. He had no sympathy for American Indians, initiating the removal of the Cherokees along the Trail of Tears. [79] [80]

    The great majority of anti-slavery activists, such as Abraham Lincoln and Mr. Walters, rejected Garrison's theology and held that slavery was an unfortunate social evil, not a sin. [81] [82]

    Westward expansion and Manifest Destiny Edit

    The American colonies and the new nation grew rapidly in population and area, as pioneers pushed the frontier of settlement west. [83] [84] The process finally ended around 1890–1912 as the last major farmlands and ranch lands were settled. Native American tribes in some places resisted militarily, but they were overwhelmed by settlers and the army and after 1830 were relocated to reservations in the west. The highly influential "Frontier Thesis" of Wisconsin historian Frederick Jackson Turner argues that the frontier shaped the national character, with its boldness, violence, innovation, individualism, and democracy. [85]

    Recent historians have emphasized the multicultural nature of the frontier. Enormous popular attention in the media focuses on the "Wild West" of the second half of the 19th century. As defined by Hine and Faragher, "frontier history tells the story of the creation and defense of communities, the use of the land, the development of markets, and the formation of states". They explain, "It is a tale of conquest, but also one of survival, persistence, and the merging of peoples and cultures that gave birth and continuing life to America." [85] The first settlers in the west were the Spanish in New Mexico they became U.S. citizens in 1848. The Hispanics in California ("Californios") were overwhelmed by over 100,000 gold rush miners. California grew explosively. San Francisco by 1880 had become the economic hub of the entire Pacific Coast with a diverse population of a quarter million.

    From the early 1830s to 1869, the Oregon Trail and its many offshoots were used by over 300,000 settlers. '49ers (in the California Gold Rush), ranchers, farmers, and entrepreneurs and their families headed to California, Oregon, and other points in the far west. Wagon-trains took five or six months on foot after 1869, the trip took 6 days by rail. [86]

    Manifest destiny was the belief that American settlers were destined to expand across the continent. This concept was born out of "A sense of mission to redeem the Old World by high example … generated by the potentialities of a new earth for building a new heaven". [87] Manifest Destiny was rejected by modernizers, especially the Whigs like Henry Clay and Abraham Lincoln who wanted to build cities and factories – not more farms. [c] Democrats strongly favored expansion, and won the key election of 1844. After a bitter debate in Congress the Republic of Texas was annexed in 1845, leading to war with Mexico, who considered Texas to be a part of Mexico due to the large numbers of Mexican settlers. [89]

    The Mexican–American War (1846–1848) broke out with the Whigs opposed to the war, and the Democrats supporting the war. The U.S. army, using regulars and large numbers of volunteers, defeated the Mexican armies, invaded at several points, captured Mexico City and won decisively. The Treaty of Guadalupe Hidalgo ended the war in 1848. Many Democrats wanted to annex all of Mexico, but that idea was rejected by southerners who argued that by incorporating millions of Mexican people, mainly of mixed race, would undermine the United States as an exclusively white republic. [88] Instead the U.S. took Texas and the lightly settled northern parts (California and New Mexico). The Hispanic residents were given full citizenship and the Mexican Indians became American Indians. Simultaneously, gold was discovered in California in 1849, attracting over 100,000 men to northern California in a matter of months in the California Gold Rush. A peaceful compromise with Britain gave the U.S. ownership of the Oregon Country, which was renamed the Oregon Territory. [89]

    The demand for guano (prized as an agricultural fertilizer) led the United States to pass the Guano Islands Act in 1856, which enabled citizens of the United States to take possession, in the name of the United States, of unclaimed islands containing guano deposits. Under the act the United States annexed nearly 100 islands in the Pacific Ocean and the Caribbean Sea. By 1903, 66 of these islands were recognized as territories of the United States. [90]

    Divisions between North and South Edit

    The central issue after 1848 was the expansion of slavery, pitting the anti-slavery elements in the North, against the pro-slavery elements that dominated the South. A small number of active Northerners were abolitionists who declared that ownership of slaves was a sin (in terms of Protestant theology) and demanded its immediate abolition. Much larger numbers in the North were against the expansion of slavery, seeking to put it on the path to extinction so that America would be committed to free land (as in low-cost farms owned and cultivated by a family), free labor, and free speech (as opposed to censorship of abolitionist material in the South). Southern white Democrats insisted that slavery was of economic, social, and cultural benefit to all whites (and even to the slaves themselves), and denounced all anti-slavery spokesmen as "abolitionists". [91] Justifications of slavery included economics, history, religion, legality, social good, and even humanitarianism, to further their arguments. Defenders of slavery argued that the sudden end to the slave economy would have had a profound and killing economic impact in the South where reliance on slave labor was the foundation of their economy. They also argued that if all the slaves were freed, there would be widespread unemployment and chaos. [92]

    Religious activists split on slavery, with the Methodists and Baptists dividing into northern and southern denominations. In the North, the Methodists, Congregationalists, and Quakers included many abolitionists, especially among women activists. (The Catholic, Episcopal and Lutheran denominations largely ignored the slavery issue.) [93]

    Compromise of 1850 and popular sovereignty Edit

    The issue of slavery in the new territories was seemingly settled by the Compromise of 1850, brokered by Whig Henry Clay and Democrat Stephen Douglas the Compromise included the admission of California as a free state in exchange for no federal restrictions on slavery placed on Utah or New Mexico. [94] The point of contention was the Fugitive Slave Act, which increased federal enforcement and required even free states to cooperate in turning over fugitive slaves to their owners. Abolitionists pounced on the Act to attack slavery, as in the best-selling anti-slavery novel Uncle Tom's Cabin by Harriet Beecher Stowe. [95]

    The Compromise of 1820 was repealed in 1854 with the Kansas–Nebraska Act, promoted by Senator Douglas in the name of "popular sovereignty" and democracy. It permitted voters to decide on the legality of slavery in each territory, and allowed Douglas to adopt neutrality on the issue of slavery. Anti-slavery forces rose in anger and alarm, forming the new Republican Party. Pro- and anti- contingents rushed to Kansas to vote slavery up or down, resulting in a miniature civil war called Bleeding Kansas. By the late 1850s, the young Republican Party dominated nearly all northern states and thus the electoral college. It insisted that slavery would never be allowed to expand (and thus would slowly die out). [96]

    Plantation economy Edit

    The Southern slavery-based societies had become wealthy based on their cotton and other agricultural commodity production, and some particularly profited from the internal slave trade. Northern cities such as Boston and New York, and regional industries, were tied economically to slavery by banking, shipping, and manufacturing, including textile mills. By 1860, there were four million slaves in the South, nearly eight times as many as there were nationwide in 1790. The plantations were highly profitable, due to the heavy European demand for raw cotton. Most of the profits were invested in new lands and in purchasing more slaves (largely drawn from the declining tobacco regions).

    For 50 of the nation's first 72 years, a slaveholder served as President of the United States and, during that period, only slaveholding presidents were re-elected to second terms. [97] In addition, southern states benefited by their increased apportionment in Congress due to the partial counting of slaves in their populations.

    Slave rebellions Edit

    Slave rebellions, by Gabriel Prosser (1800), Denmark Vesey (1822), Nat Turner (1831), and most famously by John Brown (1859), caused fear in the white South, which imposed stricter oversight of slaves and reduced the rights of free blacks. The Fugitive Slave Act of 1850 required the states to cooperate with slave owners when attempting to recover escaped slaves, which outraged Northerners. Formerly, an escaped slave that reached a non-slave state was presumed to have attained sanctuary and freedom under the Missouri Compromise. The Supreme Court's 1857 decision in Dred Scott v. Sandford ruled that the Missouri Compromise was unconstitutional angry Republicans said this decision threatened to make slavery a national institution.

    President Abraham Lincoln and secession Edit

    After Abraham Lincoln won the 1860 election, seven Southern states seceded from the union and set up a new nation, the Confederate States of America (Confederacy), on February 8, 1861. It attacked Fort Sumter, a U.S. Army fort in South Carolina, thus igniting the war. When Lincoln called for troops to suppress the Confederacy in April 1861, four more states seceded and joined the Confederacy. A few of the (northernmost) "slave states" did not secede and became known as the border states these were Delaware, Maryland, Kentucky, and Missouri.

    During the war, the northwestern portion of Virginia seceded from the Confederacy. and became the new Union state of West Virginia. [98] West Virginia is usually associated with the border states.

    Civil War Edit

    The Civil War began April 12, 1861, when Confederate forces attacked a U.S. military installation at Fort Sumter in South Carolina. In response, Lincoln called on the states to send troops to recapture forts, protect the capital, and "preserve the Union," which in his view still existed intact despite the actions of the seceding states. The two armies had their first major clash at the First Battle of Bull Run, which proved to both sides that the war would be much longer and bloodier than originally anticipated. [99]

    In the western theater, the Union was relatively successful, with major battles, such as Perryville and Shiloh along with Union gunboat dominance of navigable rivers producing strategic Union victories and destroying major Confederate operations. [100]

    Warfare in the eastern theater began poorly for the Union. U.S. General George B. McClellan failed to capture the Confederate capital of Richmond, Virginia in his Peninsula Campaign and retreated after attacks from Confederate General Robert E. Lee. [101] Meanwhile, both sides concentrated in 1861–1862 on raising and training new armies. The main action was Union success in controlling the border states, with Confederates largely driven out of border states. The autumn 1862 Confederate retreat at the Battle of Antietam led to and Lincoln's warning he would issue an Emancipation Proclamation in January 1863 if the states did not return. Making slavery a central war goal energized Republicans in the North, as well as their enemies, the anti-war Copperhead Democrats and ended the chance of British and French intervention. Lee's smaller army won battles in late 1862 and Spring 1863, but he pushed too hard and ignored the Union threat in the west. Lee invaded Pennsylvania in search of supplies and to cause war-weariness in the North. In perhaps the turning point of the war, Lee's army was badly beaten at the July 1863 Battle of Gettysburg and barely made it back to Virginia. [102] In July 1863, Union forces under General Ulysses S. Grant gained control of the Mississippi River at the Battle of Vicksburg, thereby splitting the Confederacy. In 1864, Union General William Tecumseh Sherman marched south from Chattanooga to capture Atlanta, a decisive victory that ended war jitters among Republicans in the North hand helped Lincoln win re-election.

    On the homefront, industrial expansion in the North expanded dramatically, using its extensive railroad service, and moving industrial workers into munitions factories. Foreign trade increased, with the United States providing both food and cotton to Britain, And Britain sending in manufactured products and thousands of volunteers for the Union Army (plus a few to the Confederates). The British operated blockade runners bringing in food, luxury items and munitions to the Confederacy, bringing out tobacco and cotton. The Union blockade increasingly shut down Confederate ports, and by late 1864 the blockade runners were usually captured before they could make more than a handful of runs.

    The last two years of the war were bloody for both sides, with Sherman marching almost unopposed through southern states, burning cities, destroying plantations, ruining railroads and bridges, but avoiding civilian casualties. Sherman demonstrated that the South was unable to resist a Union invasion. Much of the Confederate heartland was destroyed, and could no longer provide desperately needed supplies to its armies. In spring 1864 Grant, launched a war of attrition and pursued Lee to the final, Appomattox Campaign which resulted in Lee surrendering in April 1865.

    The American Civil War was the world's earliest industrial war. Railroads, the telegraph, steamships, and mass-produced weapons were employed extensively. The mobilization of civilian factories, mines, shipyards, banks, transportation and food supplies all foreshadowed the impact of industrialization in World War I. It remains the deadliest war in American history, resulting in the deaths of about 750,000 soldiers and an undetermined number of civilian casualties. [d] About ten percent of all Northern males 20–45 years old, and 30 percent of all Southern white males aged 18–40 died. [105] Its legacy includes ending slavery in the United States, restoring the Union, and strengthening the role of the federal government.

    According to historian Allan Nevins, the Civil War had a major long-term impact on the United States in terms of developing its leadership potential and moving the entire nation beyond the adolescent stage:

    The fighting and its attendant demands upon industry, finance, medicine, and law also helped train a host of leaders who during the next 35 years, to 1900, made their influence powerfully felt on most of the social, economic, and cultural fronts. It broke down barriers of parochialism it ended distrust of large-scale effort it hardened and matured the whole people emotionally. The adolescent land of the 1850s…rose under the blows of battle to adult estate. The nation of the post-Appomattox generation, though sadly hurt (especially in the South) by war losses, and deeply scarred psychologically (especially in the North) by war hatreds and greeds, had at last the power, resolution, and self-trust of manhood. [106]

    Emancipation Edit

    (People in the image are clickable.)

    The Emancipation Proclamation was an executive order issued by President Abraham Lincoln on January 1, 1863. In a single stroke it changed the legal status, as recognized by the U.S. government, of 3 million slaves in designated areas of the Confederacy from "slave" to "free". It had the practical effect that as soon as a slave escaped the control of the Confederate government, by running away or through advances of federal troops, the slave became legally and actually free. The owners were never compensated. Plantation owners, realizing that emancipation would destroy their economic system, sometimes moved their slaves as far as possible out of reach of the Union army. By June 1865, the Union Army controlled all of the Confederacy and liberated all of the designated slaves. [108] Large numbers moved into camps run by the Freedmen's Bureau, where they were given food, shelter, medical care, and arrangements for their employment were made.

    The severe dislocations of war and Reconstruction had a large negative impact on the black population, with a large amount of sickness and death. [109]

    Reconstruction Edit

    Reconstruction lasted from Lincoln's Emancipation Proclamation of January 1, 1863, to the Compromise of 1877. [99] [110] [111]

    The major issues faced by Lincoln were the status of the ex-slaves ("Freedmen"), the loyalty and civil rights of ex-rebels, the status of the 11 ex-Confederate states, the powers of the federal government needed to prevent a future civil war, and the question of whether Congress or the President would make the major decisions.

    The severe threats of starvation and displacement of the unemployed Freedmen were met by the first major federal relief agency, the Freedmen's Bureau, operated by the Army. [112]

    Three "Reconstruction Amendments" were passed to expand civil rights for black Americans: the Thirteenth Amendment outlawed slavery the Fourteenth Amendment guaranteed equal rights for all and citizenship for blacks the Fifteenth Amendment prevented race from being used to disenfranchise men.

    Radical Reconstruction Edit

    Ex-Confederates remained in control of most Southern states for over two years, but changed when the Radical Republicans gained control of Congress in the 1866 elections. President Andrew Johnson, who sought easy terms for reunions with ex-rebels, was virtually powerless in the face of the Radical Republican Congress he was impeached, but the Senate's attempt to remove him from office failed by one vote. Congress enfranchised black men and temporarily stripped many ex-Confederate leaders of the right to hold office. New Republican governments came to power based on a coalition of Freedmen made up of Carpetbaggers (new arrivals from the North), and Scalawags (native white Southerners). They were backed by the U.S. Army. Opponents said they were corrupt and violated the rights of whites. [113]

    KKK and the rise of Jim Crow Edit

    State by state, they lost power to a conservative-Democratic coalition, which gained control of the entire South by 1877. In response to Radical Reconstruction, the Ku Klux Klan (KKK) emerged in 1867 as a white-supremacist organization opposed to black civil rights and Republican rule. President Ulysses Grant's vigorous enforcement of the Ku Klux Klan Act of 1870 shut down the Klan, and it disbanded. Paramilitary groups, such as the White League and Red Shirts emerged about 1874 that worked openly to use intimidation and violence to suppress black voting to regain white political power in states across the South during the 1870s. One historian described them as the military arm of the Democratic Party. [113]

    Reconstruction ended after the disputed 1876 election. The Compromise of 1877 gave Republican candidate Rutherford B. Hayes the White House in exchange for removing all remaining federal troops in the South. The federal government withdrew its troops from the South, and Southern Democrats took control of every Southern state. [114] From 1890 to 1908, southern states effectively disfranchised most black voters and many poor whites by making voter registration more difficult through poll taxes, literacy tests, and other arbitrary devices. They passed segregation laws and imposed second-class status on blacks in a system known as Jim Crow that lasted until the Civil Rights Movement. [115]

    Frontier and the railroad Edit

    The latter half of the nineteenth century was marked by the rapid development and settlement of the far West, first by wagon trains and riverboats and then aided by the completion of the transcontinental railroad. Large numbers of European immigrants (especially from Germany and Scandinavia) took up low-cost or free farms in the Prairie States. Mining for silver and copper opened up the Mountain West.

    Indian wars Edit

    The United States Army fought frequent small-scale wars with Native Americans as settlers encroached on their traditional lands. Gradually the U.S. purchased the Native American tribal lands and extinguished their claims, forcing most tribes onto subsidized reservations. According to the U.S. Bureau of the Census (1894), from 1789 to 1894:

    The Indian wars under the government of the United States have been more than 40 in number. They have cost the lives of about 19,000 white men, women and children, including those killed in individual combats, and the lives of about 30,000 Indians. The actual number of killed and wounded Indians must be very much higher than the given… Fifty percent additional would be a safe estimate. [116]

    Gilded Age Edit

    The "Gilded Age" was a term that Mark Twain used to describe the period of the late 19th century with a dramatic expansion of American wealth and prosperity, underscored by the mass corruption in the government. Reforms of the Age included the Civil Service Act, which mandated a competitive examination for applicants for government jobs. Other important legislation included the Interstate Commerce Act, which ended railroads' discrimination against small shippers, and the Sherman Antitrust Act, which outlawed monopolies in business. Twain believed that this age was corrupted by such elements as land speculators, scandalous politics, and unethical business practices. [117] Since the days of Charles A. Beard and Matthew Josephson, some historians have argued that the United States was effectively plutocratic for at least part of the Gilded Age and Progressive Era. [118] [119] [120] [121] [122] As financiers and industrialists such as J.P. Morgan and John D. Rockefeller began to amass vast fortunes, many U.S. observers were concerned that the nation was losing its pioneering egalitarian spirit. [123]

    By 1890 American industrial production and per capita income exceeded those of all other world nations. In response to heavy debts and decreasing farm prices, wheat and cotton farmers joined the Populist Party. [124] An unprecedented wave of immigration from Europe served to both provide the labor for American industry and create diverse communities in previously undeveloped areas. From 1880 to 1914, peak years of immigration, more than 22 million people migrated to the United States. [125] Most were unskilled workers who quickly found jobs in mines, mills, and factories. Many immigrants were craftsmen (especially from Britain and Germany) bringing human skills, and others were farmers (especially from Germany and Scandinavia) who purchased inexpensive land on the Prairies from railroads who sent agents to Europe. Poverty, growing inequality and dangerous working conditions, along with socialist and anarchist ideas diffusing from European immigrants, led to the rise of the labor movement, which often included violent strikes. [126] [127]

    Unions and strikes Edit

    Skilled workers banded together to control their crafts and raise wages by forming labor unions in industrial areas of the Northeast. Before the 1930s few factory workers joined the unions in the labor movement. Samuel Gompers led the American Federation of Labor (1886–1924), coordinating multiple unions. Industrial growth was rapid, led by John D. Rockefeller in oil and Andrew Carnegie in steel both became leaders of philanthropy (Gospel of Wealth), giving away their fortunes to create the modern system of hospitals, universities, libraries, and foundations.

    The Panic of 1893 broke out and was a severe nationwide depression impacting farmers, workers, and businessmen who saw prices, wages, and profits fall. [129] Many railroads went bankrupt. The resultant political reaction fell on the Democratic Party, whose leader President Grover Cleveland shouldered much of the blame. Labor unrest involved numerous strikes, most notably the violent Pullman Strike of 1894, which was shut down by federal troops under Cleveland's orders. The Populist Party gained strength among cotton and wheat farmers, as well as coal miners, but was overtaken by the even more popular Free Silver movement, which demanded using silver to enlarge the money supply, leading to inflation that the silverites promised would end the depression. [130]

    The financial, railroad, and business communities fought back hard, arguing that only the gold standard would save the economy. In the most intense election in the nation's history, conservative Republican William McKinley defeated silverite William Jennings Bryan, who ran on the Democratic, Populist, and Silver Republican tickets. Bryan swept the South and West, but McKinley ran up landslides among the middle class, industrial workers, cities, and among upscale farmers in the Midwest. [131]

    Prosperity returned under McKinley, the gold standard was enacted, and the tariff was raised. By 1900 the U.S. had the strongest economy on the globe. Apart from two short recessions (in 1907 and 1920) the overall economy remained prosperous and growing until 1929. Republicans, citing McKinley's policies, took the credit. [132]

    Imperialism Edit

    The United States emerged as a world economic and military power after 1890. The main episode was the Spanish–American War, which began when Spain refused American demands to reform its oppressive policies in Cuba. [134] The "splendid little war", as one official called it, involved a series of quick American victories on land and at sea. At the Treaty of Paris peace conference the United States acquired the Philippines, Puerto Rico, and Guam. [135]

    Cuba became an independent country, under close American tutelage. Although the war itself was widely popular, the peace terms proved controversial. William Jennings Bryan led his Democratic Party in opposition to control of the Philippines, which he denounced as imperialism unbecoming to American democracy. [135] President William McKinley defended the acquisition and was riding high as the nation had returned to prosperity and felt triumphant in the war. McKinley easily defeated Bryan in a rematch in the 1900 presidential election. [136]

    After defeating an insurrection by Filipino nationalists, the United States achieved little in the Philippines except in education, and it did something in the way of public health. It also built roads, bridges, and wells, but infrastructural development lost much of its early vigor with the failure of the railroads. [137] By 1908, however, Americans lost interest in an empire and turned their international attention to the Caribbean, especially the building of the Panama Canal. The canal opened in 1914 and increased trade with Japan and the rest of the Far East. A key innovation was the Open Door Policy, whereby the imperial powers were given equal access to Chinese business, with not one of them allowed to take control of China. [138]

    Progressive era Edit

    Dissatisfaction on the part of the growing middle class with the corruption and inefficiency of politics as usual, and the failure to deal with increasingly important urban and industrial problems, led to the dynamic Progressive Movement starting in the 1890s. In every major city and state, and at the national level as well, and in education, medicine, and industry, the progressives called for the modernization and reform of decrepit institutions, the elimination of corruption in politics, and the introduction of efficiency as a criterion for change. Leading politicians from both parties, most notably Theodore Roosevelt, Charles Evans Hughes, and Robert La Follette on the Republican side, and William Jennings Bryan and Woodrow Wilson on the Democratic side, took up the cause of progressive reform. Women became especially involved in demands for woman suffrage, prohibition, and better schools their most prominent leader was Jane Addams of Chicago, who created settlement houses. "Muckraking" journalists such as Upton Sinclair, Lincoln Steffens and Jacob Riis exposed corruption in business and government along with rampant inner-city poverty. Progressives implemented antitrust laws and regulated such industries of meat-packing, drugs, and railroads. Four new constitutional amendments – the Sixteenth through Nineteenth – resulted from progressive activism, bringing the federal income tax, direct election of Senators, prohibition, and woman suffrage. [139] The period also saw a major transformation of the banking system with the creation of the Federal Reserve System in 1913 [140] and the arrival of cooperative banking in the US with the founding of the first credit union in 1908. [141] The Progressive Movement lasted through the 1920s the most active period was 1900–1918. [142]

    Women's suffrage Edit

    The women's suffrage movement began with the June 1848 National Convention of the Liberty Party. Presidential candidate Gerrit Smith argued for and established women's suffrage as a party plank. One month later, his cousin Elizabeth Cady Stanton joined with Lucretia Mott and other women to organize the Seneca Falls Convention, featuring the Declaration of Sentiments demanding equal rights for women, and the right to vote. [e] Many of these activists became politically aware during the abolitionist movement. The women's rights campaign during "first-wave feminism" was led by Stanton, Lucy Stone and Susan B. Anthony, among many others. Stone and Paulina Wright Davis organized the prominent and influential National Women's Rights Convention in 1850. The movement reorganized after the Civil War, gaining experienced campaigners, many of whom had worked for prohibition in the Women's Christian Temperance Union. By the end of the 19th century a few western states had granted women full voting rights, [144] though women had made significant legal victories, gaining rights in areas such as property and child custody. [145]

    Around 1912 the feminist movement began to reawaken, putting an emphasis on its demands for equality and arguing that the corruption of American politics demanded purification by women because men could not do that job. [146] Protests became increasingly common as suffragette Alice Paul led parades through the capital and major cities. Paul split from the large National American Woman Suffrage Association (NAWSA), which favored a more moderate approach and supported the Democratic Party and Woodrow Wilson, led by Carrie Chapman Catt, and formed the more militant National Woman's Party. Suffragists were arrested during their "Silent Sentinels" pickets at the White House, the first time such a tactic was used, and were taken as political prisoners. [147]

    The old anti-suffragist argument that only men could fight a war, and therefore only men deserve the right to vote, was refuted by the enthusiastic participation of tens of thousands of American women on the home front in World War I. Across the world, grateful nations gave women the right to vote. Furthermore, most of the Western states had already given the women the right to vote in state and national elections, and the representatives from those states, including the first woman Jeannette Rankin of Montana, demonstrated that woman suffrage was a success. The main resistance came from the south, where white leaders were worried about the threat of black women voting. Congress passed the Nineteenth Amendment in 1919, and women could vote in 1920. [148]

    NAWSA became the League of Women Voters, and the National Woman's Party began lobbying for full equality and the Equal Rights Amendment, which would pass Congress during the second wave of the women's movement in 1972. Politicians responded to the new electorate by emphasizing issues of special interest to women, especially prohibition, child health, and world peace. [149] [150] The main surge of women voting came in 1928, when the big-city machines realized they needed the support of women to elect Al Smith, a Catholic from New York City. Meanwhile, Protestants mobilized women to support Prohibition and vote for Republican Herbert Hoover. [151]

    Women suffragists demonstrating for the right to vote in 1913.

    Women's suffragists parade in New York City in 1917, carrying placards with signatures of more than a million women. [152]

    Women surrounded by posters in English and Yiddish supporting Franklin D. Roosevelt, Herbert H. Lehman, and the American Labor Party teach other women how to vote, 1936.

    World War I Edit

    As World War I raged in Europe from 1914, President Woodrow Wilson took full control of foreign policy, declaring neutrality but warning Germany that resumption of unrestricted submarine warfare against American ships supplying goods to Allied nations would mean war. Germany decided to take the risk and try to win by cutting off supplies to Britain through the sinking of ships such as the RMS Lusitania the U.S. declared war in April 1917 mainly from the threat of the Zimmermann Telegram. [153] American money, food, and munitions arrived quickly, but troops had to be drafted and trained by summer 1918 American soldiers under General John J. Pershing's American Expeditionary Forces arrived at the rate of 10,000 a day, while Germany was unable to replace its losses. [154] Dissent against the war was suppressed by the Sedition Act of 1918 & Espionage Act of 1917, German language, leftist & pacifist publications were suppressed, and over 2,000 were imprisoned for speaking out against the war, the political prisoners were later released by U.S President Warren G. Harding. [155]

    The result was Allied victory in November 1918. President Wilson demanded Germany depose the Kaiser and accept his terms in the famed Fourteen Points speech. Wilson dominated the 1919 Paris Peace Conference but Germany was treated harshly by the Allies in the Treaty of Versailles (1919) as Wilson put all his hopes in the new League of Nations. Wilson refused to compromise with Senate Republicans over the issue of Congressional power to declare war, and the Senate rejected the Treaty and the League. [156]

    Roaring twenties Edit

    In the 1920s the U.S. grew steadily in stature as an economic and military world power. The United States Senate did not ratify the Treaty of Versailles imposed by its Allies on the defeated Central Powers instead, the United States chose to pursue unilateralism. [157] The aftershock of Russia's October Revolution resulted in real fears of Communism in the United States, leading to a Red Scare and the deportation of aliens considered subversive.

    While public health facilities grew rapidly in the Progressive Era, and hospitals and medical schools were modernized, [158] the nation in 1918 lost 675,000 lives to the Spanish flu pandemic. [159]

    In 1920, the manufacture, sale, import and export of alcohol were prohibited by the Eighteenth Amendment, Prohibition. The result was that in cities illegal alcohol became a big business, largely controlled by racketeers. The second Ku Klux Klan grew rapidly in 1922–1925, then collapsed. Immigration laws were passed to strictly limit the number of new entries. The 1920s were called the Roaring Twenties due to the great economic prosperity during this period. Jazz became popular among the younger generation, and thus the decade was also called the Jazz Age.

    The Great Depression (1929–1939) and the New Deal (1933–1936) were decisive moments in American political, economic, and social history that reshaped the nation. [160]

    Great Depression and the New Deal Edit

    During the 1920s, the nation enjoyed widespread prosperity, albeit with a weakness in agriculture. A financial bubble was fueled by an inflated stock market, which later led to the Stock Market Crash on October 29, 1929. [161] [ full citation needed ] This, along with many other economic factors, triggered a worldwide depression known as the Great Depression. During this time, the United States experienced deflation as prices fell, unemployment soared from 3% in 1929 to 25% in 1933, farm prices fell by half, and manufacturing output plunged by one-third.

    In 1932, Democratic presidential nominee Franklin D. Roosevelt promised "a New Deal for the American people", coining the enduring label for his domestic policies. The result was a series of permanent reform programs including Relief for the unemployed, assistance for the elderly, jobs for young men, social security, unemployment insurance, public housing, bankruptcy insurance, farm subsidies, and regulation of financial securities. State governments added new programs as well and introduced the sales tax to pay for them. Ideologically the revolution established modern liberalism in the United States and kept the Democrats in power in Washington almost continuously for Three decades thanks to the New Deal Coalition of ethnic Whites, Blacks, blue-collar workers, labor unions, and white Southerners. It provided relief to the long-term unemployed through numerous programs, such as the Works Progress Administration (WPA) and for young men, the Civilian Conservation Corps. Large scale spending projects designed to provide private sector construction jobs and rebuild the infrastructure were under the purview of the Public Works Administration.

    The Second New Deal was a turn to the left in 1935–1936, building up labor unions through the Wagner Act. Unions became a powerful element of the merging New Deal Coalition, which won reelection for Roosevelt in 1936, 1940, and 1944 by mobilizing union members, blue-collar workers, relief recipients, big city machines, ethnic, and religious groups (especially Catholics and Jews) and the white South, along with blacks in the North (where they could vote). Roosevelt seriously weakened his second term by a failed effort to pack the Supreme Court, which had been a center of conservative resistance to his programs. Most of the relief programs were dropped after 1938 in the 1940s when the conservatives regained power in Congress through the Conservative Coalition. Of special importance is the Social Security program, begun in 1935. The economy basically recovered by 1936, but had a sharp, short recession in 1937–1938 long-term unemployment, however, remained a problem until it was solved by wartime spending. [162]

    In an effort to denounce past U.S. interventionism and subdue any subsequent fears of Latin Americans, Roosevelt announced on March 4, 1933, during his inaugural address, "In the field of World policy, I would dedicate this nation to the policy of the good neighbor, the neighbor who resolutely respects himself and, because he does so, respects the rights of others, the neighbor who respects his obligations and respects the sanctity of his agreements in and with a World of neighbors." [163] To create a friendly relationship between the United States and Central as well as South American countries, Roosevelt sought to stray from asserting military force in the region. [164] This position was affirmed by Cordell Hull, Roosevelt's Secretary of State at a conference of American states in Montevideo in December 1933.

    World War II Edit

    In the Depression years, the United States remained focused on domestic concerns while democracy declined across the world and many countries fell under the control of dictators. Imperial Japan asserted dominance in East Asia and in the Pacific. Nazi Germany and Fascist Italy militarized and threatened conquests, while Britain and France attempted appeasement to avert another war in Europe. U.S. legislation in the Neutrality Acts sought to avoid foreign conflicts however, policy clashed with increasing anti-Nazi feelings following the German invasion of Poland in September 1939 that started World War II. At first, Roosevelt positioned the U.S. as the "Arsenal of Democracy," pledging full-scale financial and munitions support for the Allies and Lend-Lease agreements – but no military personnel. [165] Japan tried to neutralize America's power in the Pacific by attacking Pearl Harbor in 1941, but instead it catalyzed American support to enter the war. [166]

    The main contributions of the U.S. to the Allied war effort comprised money, industrial output, food, petroleum, technological innovation, and (especially 1944–1945), military personnel. Much of the focus the U.S. government was in maximizing the national economic output, causing a dramatic increase in GDP, the export of vast quantities of supplies to the Allies and to American forces overseas, the end of unemployment, and a rise in civilian consumption even as 40% of the GDP went to the war effort. Tens of millions of workers moved from low-productivity occupations to high-efficiency jobs, improving productivity through better technology and management, and students, retired people, housewives, and the unemployed moving into the active labor force. Economic mobilization was managed by the War Production Board and a wartime production boom led to full employment, wiping out this vestige of the Great Depression. Indeed, labor shortages encouraged industry to look for new sources of workers, finding new roles for women and blacks. [160] Most durable goods became unavailable, and meat, clothing, and gasoline were tightly rationed. In industrial areas housing was in short supply as people doubled up and lived in cramped quarters. Prices and wages were controlled, and Americans saved a high portion of their incomes, which led to renewed growth after the war instead of a return to depression. [167] [168] </ref> Americans on the home front tolerated the extra work because of patriotism, increased pay, and the confidence that it was only "for the duration," and life would return to normal as soon as the war was won.

    The Allies – the United States, Britain, and the Soviet Union and other countries – saw Germany as the main threat and gave the highest priority to Europe. The U.S. dominated the war against Japan and stopped Japanese expansion in the Pacific in 1942. After losing Pearl Harbor and the Philippines, and drawing the Battle of the Coral Sea (May 1942), the American Navy inflicted a decisive blow at Midway (June 1942). American ground forces assisted in the North African Campaign that eventually concluded with the collapse of Mussolini's fascist government in 1943, as Italy switched to the Allied side. A more significant European front was opened on D-Day, June 6, 1944, in which American and Allied forces invaded Nazi-occupied France from Britain.

    War fervor also inspired anti-Japanese sentiment, leading to internment of Japanese Americans. [169] Roosevelt's Executive Order 9066 resulted in over 120,000 Americans of Japanese descent being removed from their homes and placed in internment camps. Two-thirds of those interned were American citizens and half of them were children. [170] [171] [172]

    Military research and development also increase, leading to the Manhattan Project, a secret effort to harness nuclear fission to produce atomic bombs. [173] The first nuclear device ever detonated was conducted July 16, 1945. [174]

    The Allies pushed the Germans out of France but the western front stopped short, leaving Berlin to the Soviets as the Nazi regime formally capitulated in May 1945, ending the war in Europe. [175] In the Pacific, the U.S. implemented an island hopping strategy toward Tokyo. The Philippines was eventually reconquered, after Japan and the United States fought in history's largest naval battle, "The Battle of Leyte Gulf". [176] However, the war wiped out all the development the United States invested in the Philippines as cities and towns were completely destroyed. [177] The United States then established airfields for bombing runs against mainland Japan from the Mariana Islands and achieving hard-fought victories at Iwo Jima and Okinawa in 1945. [178] Bloodied at Okinawa, the U.S. prepared to invade Japan's home islands when B-29s dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki, forcing the Japan's surrender and ending World War II. [179] The U.S. occupied Japan (and part of Germany), and restructured Japan along American lines. [180]

    During the war, Roosevelt coined the term "Four Powers" to refer four major Allies of World War II, the United States, the United Kingdom, the Soviet Union, and China, which later became the foundation of the United Nations Security Council. [181] Though the nation lost more than 400,000 military personnel and civilians, [182] the U.S. mostly prospered untouched by the devastation of war that inflicted a heavy toll on Europe and Asia.

    Participation in postwar foreign affairs marked the end of predominant American isolationism. The threat of nuclear weapons inspired both optimism and fear. Nuclear weapons were never again used in combat after the war ended, as both sides drew back from the brink and a "long peace" characterized the Cold War years, starting with the Truman Doctrine on May 22, 1947. There were, however, regional wars in Korea and Vietnam. [183]

    Cold War Edit

    Following World War II, the United States emerged as one of the two dominant superpowers, the USSR being the other. The U.S. Senate on a bipartisan vote approved U.S. participation in the United Nations (UN), which marked a turn away from the traditional isolationism of the U.S. and toward increased international involvement.

    The primary American goal of 1945–1948 was to rescue Europe from the devastation of World War II and to contain the expansion of Communism, represented by the Soviet Union. U.S. foreign policy during the Cold War was built around the support of Western Europe and Japan along with the policy of containment, stopping the spread of communism. The U.S. joined the wars in Korea and Vietnam and toppled left-wing governments in the third world to try to stop its spread. [184] The Truman Doctrine of 1947 provided military and economic aid to Greece and Turkey to counteract the threat of Communist expansion in the Balkans. In 1948, the United States replaced piecemeal financial aid programs with a comprehensive Marshall Plan, which pumped money into the economy of Western Europe, and removed trade barriers, while modernizing the managerial practices of businesses and governments. [185]

    The Plan's $13 billion budget was in the context of a U.S. GDP of $258 billion in 1948 and was in addition to the $12 billion in American aid given to Europe between the end of the war and the start of the Marshall Plan. Soviet head of state Joseph Stalin prevented his satellite states from participating, and from that point on, Eastern Europe, with inefficient centralized economies, fell further and further behind Western Europe in terms of economic development and prosperity. In 1949, the United States, rejecting the long-standing policy of no military alliances in peacetime, formed the North Atlantic Treaty Organization (NATO) alliance, which continues into the 21st century. In response the Soviets formed the Warsaw Pact of communist states, leading to the "Iron Curtain". [185]

    In August 1949 the Soviets tested their first nuclear weapon, thereby escalating the risk of warfare. The threat of mutually assured destruction however, prevented both powers from nuclear war, and resulted in proxy wars, especially in Korea and Vietnam, in which the two sides did not directly confront each other. [183]

    President Dwight D Eisenhower, elected in a landslide as the first Republican president since 1932, had a lasting impact on American life and politics. [186] He ended the Korean War, and avoided any other major conflict. He cut military spending by reliance on very high technology, such as nuclear weapons carried by long-range bombers and intercontinental missiles. He gave strong support to the NATO alliance and built other alliances along similar lines, but they never were especially effective. After Stalin died in 1953, Eisenhower worked to obtain friendlier relationships with the Soviet Union. At home, he ended McCarthyism, expanded the Social Security program and presided over a decade of bipartisan comity. He promoted civil rights cautiously, and sent in the Army when trouble threatened over racial integration in Little Rock Arkansas. [187] The unexpected leapfrogging of American technology by the Soviets in 1957 with Sputnik, the first Earth satellite, began the Space Race, won in 1969 by the Americans as Apollo 11 landed astronauts on the Moon. The angst about the weaknesses of American education led to large-scale federal support for science education and research. [188] In the decades after World War II, the United States became a global influence in economic, political, military, cultural, and technological affairs.

    In 1960, John F. Kennedy was elected President and his administration saw the acceleration of the nation's role in the Space Race, escalation of the American role in the Vietnam War, the Bay of Pigs Invasion, the Cuban Missile Crisis, the jailing of Martin Luther King Jr. during the Birmingham campaign. Kennedy was assassinated on November 22, 1963, leaving the nation in profound shock. [189]

    Great Society Edit

    President Lyndon B. Johnson secured congressional passage of his Great Society programs in the mid-1960s. [190] They included civil rights, the end of legal segregation, Medicare, extension of welfare, federal aid to education at all levels, subsidies for the arts and humanities, environmental activism, and a series of programs designed to wipe out poverty. [191] [192] As later historians explained:

    Gradually, liberal intellectuals crafted a new vision for achieving economic and social justice. The liberalism of the early 1960s contained no hint of radicalism, little disposition to revive new deal era crusades against concentrated economic power, and no intention to redistribute wealth or restructure existing institutions. Internationally it was strongly anti-Communist. It aimed to defend the free world, to encourage economic growth at home, and to ensure that the resulting plenty was fairly distributed. Their agenda-much influenced by Keynesian economic theory-envisioned massive public expenditure that would speed economic growth, thus providing the public resources to fund larger welfare, housing, health, and educational programs. [193]

    Johnson was rewarded with an electoral landslide in 1964 against conservative Barry Goldwater, which broke the decades-long control of Congress by the Conservative Coalition. However, the Republicans bounced back in 1966 and elected Richard Nixon in 1968. Nixon largely continued the New Deal and Great Society programs he inherited conservative reaction would come with the election of Ronald Reagan in 1980. [194] Meanwhile, the American people completed a great migration from farms into the cities and experienced a period of sustained economic expansion.

    Civil rights movement Edit

    Starting in the late 1950s, institutionalized racism across the United States, but especially in the South, was increasingly challenged by the growing Civil Rights Movement. The activism of African-American leaders Rosa Parks and Martin Luther King Jr. led to the Montgomery bus boycott, which launched the movement. For years African Americans would struggle with violence against them but would achieve great steps toward equality with Supreme Court decisions, including Brown v. Board of Education and Loving v. Virginia, the Civil Rights Act of 1964, the Voting Rights Act of 1965, and the Fair Housing Act of 1968, which ended the Jim Crow laws that legalized racial segregation between whites and blacks. [195]

    Martin Luther King Jr., who had won the 1964 Nobel Peace Prize for his efforts to achieve equality of the races, was assassinated in 1968. Following his death others led the movement, most notably King's widow, Coretta Scott King, who was also active, like her husband, in the Opposition to the Vietnam War, and in the Women's Liberation Movement. There were 164 riots in 128 American cities in the first nine months of 1967. [196] Frustrations with the seemingly slow progress of the integration movement led to the emergence of more radical discourses during the early 1960s, which, in turn, gave rise to the Black Power movement of the late 1960s and early 1970s. [197] The decade would ultimately bring about positive strides toward integration, especially in government service, sports, and entertainment. Native Americans turned to the federal courts to fight for their land rights. They held protests highlighting the federal government's failure to honor treaties. One of the most outspoken Native American groups was the American Indian Movement (AIM). In the 1960s, Cesar Chavez began organizing poorly paid Mexican-American farm workers in California. He led a five-year-long strike by grape pickers. Then Chávez formed the nation's first successful union of farm workers. His United Farm Workers of America (UFW) faltered after a few years but after Chavez died in 1993 he became an iconic "folk saint" in the pantheon of Mexican Americans. [198]

    Women's liberation Edit

    A new consciousness of the inequality of American women began sweeping the nation, starting with the 1963 publication of Betty Friedan's best-seller, The Feminine Mystique, which explained how many housewives felt trapped and unfulfilled, assaulted American culture for its creation of the notion that women could only find fulfillment through their roles as wives, mothers, and keepers of the home, and argued that women were just as able as men to do every type of job. In 1966 Friedan and others established the National Organization for Women (NOW) to act for women as the NAACP did for African Americans. [145] [199]

    Protests began, and the new women's liberation movement grew in size and power, gained much media attention, and, by 1968, had replaced the Civil Rights Movement as the U.S's main social revolution. Marches, parades, rallies, boycotts, and pickets brought out thousands, sometimes millions. There were striking gains for women in medicine, law, and business, while only a few were elected to office. The movement was split into factions by political ideology early on, with NOW on the left, the Women's Equity Action League (WEAL) on the right, the National Women's Political Caucus (NWPC) in the center, and more radical groups formed by younger women on the far-left. The proposed Equal Rights Amendment to the Constitution, passed by Congress in 1972 was defeated by a conservative coalition mobilized by Phyllis Schlafly. They argued that it degraded the position of the housewife and made young women susceptible to the military draft. [200] [201]

    However, many federal laws (i.e. those equalizing pay, employment, education, employment opportunities, and credit ending pregnancy discrimination and requiring NASA, the Military Academies, and other organizations to admit women), state laws (i.e., those ending spousal abuse and marital rape), Supreme Court rulings (i.e. ruling that the equal protection clause of the Fourteenth Amendment applied to women), and state ERAs established women's equal status under the law, and social custom and consciousness began to change, accepting women's equality. The controversial issue of abortion, deemed by the Supreme Court as a fundamental right in Roe v. Wade (1973), is still a point of debate today. [202]

    Counterculture and Cold War détente Edit

    Amid the Cold War, the United States entered the Vietnam War, whose growing unpopularity fed already existing social movements, including those among women, minorities, and young people. President Lyndon B. Johnson's Great Society social programs and numerous rulings by the Warren Court added to the wide range of social reform during the 1960s and 1970s. Feminism and the environmental movement became political forces, and progress continued toward civil rights for all Americans. The Counterculture Revolution swept through the nation and much of the western world in the late sixties and early seventies, further dividing Americans in a "culture war" but also bringing forth more liberated social views. [203]

    Johnson was succeeded in 1969 by Republican Richard Nixon, who attempted to gradually turn the war over to the South Vietnamese forces. He negotiated the peace treaty in 1973 which secured the release of POWs and led to the withdrawal of U.S. troops. The war had cost the lives of 58,000 American troops. Nixon manipulated the fierce distrust between the Soviet Union and China to the advantage of the United States, achieving détente with both parties. [204]

    The Watergate scandal, involving Nixon's cover-up of his operatives' break-in into the Democratic National Committee headquarters at the Watergate office complex destroyed his political base, sent many aides to prison, and forced Nixon's resignation on August 9, 1974. He was succeeded by Vice President Gerald Ford. The Fall of Saigon ended the Vietnam War and resulted in North and South Vietnam being reunited. Communist victories in neighboring Cambodia and Laos occurred in the same year. [204]

    The OPEC oil embargo marked a long-term economic transition since, for the first time, energy prices skyrocketed, and American factories faced serious competition from foreign automobiles, clothing, electronics, and consumer goods. By the late 1970s the economy suffered an energy crisis, slow economic growth, high unemployment, and very high inflation coupled with high interest rates (the term stagflation was coined). Since economists agreed on the wisdom of deregulation, many of the New Deal era regulations were ended, such as in transportation, banking, and telecommunications. [205]

    Jimmy Carter, running as someone who was not a part of the Washington political establishment, was elected president in 1976. [206] On the world stage, Carter brokered the Camp David Accords between Israel and Egypt. In 1979, Iranian students stormed the U.S. embassy in Tehran and took 66 Americans hostage, resulting in the Iran hostage crisis. With the hostage crisis and continuing stagflation, Carter lost the 1980 election to the Republican Ronald Reagan. [207] On January 20, 1981, minutes after Carter's term in office ended, the remaining U.S. captives held at the U.S. embassy in Iran were released, ending the 444-day hostage crisis. [208]

    Rise of conservatism and the end of the Cold War Edit

    Ronald Reagan produced a major political realignment with his 1980 and 1984 landslide elections. Reagan's economic policies (dubbed "Reaganomics") and the implementation of the Economic Recovery Tax Act of 1981 lowered the top marginal tax rate from 70% to 28% over the course of seven years. [209] Reagan continued to downsize government taxation and regulation. [210] The U.S. experienced a recession in 1982, but the negative indicators reversed, with the inflation rate decreasing from 11% to 2%, the unemployment rate decreasing from 10.8% in December 1982 to 7.5% in November 1984, [211] and the economic growth rate increasing from 4.5% to 7.2%. [212]

    Reagan ordered a buildup of the U.S. military, incurring additional budget deficits. Reagan introduced a complicated missile defense system known as the Strategic Defense Initiative (SDI) (dubbed "Star Wars" by opponents) in which, theoretically, the U.S. could shoot down missiles with laser systems in space. The Soviets reacted harshly because they thought it violated the 1972 Anti-Ballistic Missile Treaty and would upset the balance of power by giving the U.S. a major military advantage. For years Soviet leader Mikhail Gorbachev argued vehemently against SDI. However, by the late 1980s he decided the system would never work and should not be used to block disarmament deals with the U.S. [213] Historians argue how great an impact the SDI threat had on the Soviets – whether it was enough to force Gorbachev to initiate radical reforms, or whether the deterioration of the Soviet economy alone forced the reforms. There is agreement that the Soviets realized they were well behind the Americans in military technology, that to try to catch up would be very expensive, and that the military expenses were already a very heavy burden slowing down their economy. [214]

    The 1983 Invasion of Grenada and 1986 bombing of Libya were popular in the U.S, though his backing of the Contras rebels was mired in the controversy over the Iran–Contra affair. [215]

    Reagan met four times with Soviet leader Mikhail Gorbachev, who ascended to power in 1985, and their summit conferences led to the signing of the Intermediate-Range Nuclear Forces Treaty. Gorbachev tried to save Communism in the Soviet Union first by ending the expensive arms race with America, [216] then by shedding the East European empire in 1989. The Soviet Union collapsed on Christmas Day 1991, ending the U.S–Soviet Cold War.

    The United States emerged as the world's sole remaining superpower and continued to intervene in international affairs during the 1990s, including the 1991 Gulf War against Iraq. Following his election in 1992, President Bill Clinton oversaw one of the longest periods of economic expansion and unprecedented gains in securities values, a side effect of the digital revolution and new business opportunities created by the Internet. He also worked with the Republican Congress to pass the first balanced federal budget in 30 years. [217]

    In 1998, Clinton was impeached by the House of Representatives on charges of lying under oath about (perjury regarding) a sexual relationship with White House intern Monica Lewinsky. He was acquitted by the Senate. The failure of impeachment and the Democratic gains in the 1998 election forced House Speaker Newt Gingrich, a Republican, to resign from Congress. [217]

    The Republican Party expanded its base throughout the South after 1968 (excepting 1976), largely due to its strength among socially conservative white Evangelical Protestants and traditionalist Roman Catholics, added to its traditional strength in the business community and suburbs. As white Democrats in the South lost dominance of the Democratic Party in the 1990s, the region took on the two-party apparatus which characterized most of the nation. The Republican Party's central leader by 1980 was Ronald Reagan, whose conservative policies called for reduced government spending and regulation, lower taxes, and a strong anti-Soviet foreign policy. His iconic status in the party persists into the 21st century, as practically all Republican Party leaders acknowledge his stature. Social scientists Theodore Caplow et al. argue, "The Republican party, nationally, moved from right-center toward the center in 1940s and 1950s, then moved right again in the 1970s and 1980s." They add: "The Democratic party, nationally, moved from left-center toward the center in the 1940s and 1950s, then moved further toward the right-center in the 1970s and 1980s." [218]

    The close presidential election in 2000 between Governor George W. Bush and Al Gore helped lay the seeds for political polarization to come. The vote in the decisive states of New Mexico and Florida was extremely close and produced a dramatic dispute over the counting of votes. [219] Including 2000, the Democrats outpolled the Republicans in the national vote in every election from 1992 to 2020, except for 2004.

    9/11 and the War on Terror Edit

    On September 11, 2001 ("9/11"), the United States was struck by a terrorist attack when 19 al-Qaeda hijackers commandeered four airliners to be used in suicide attacks and intentionally crashed two into both twin towers of the World Trade Center and the third into the Pentagon, killing 2,937 victims—206 aboard the three airliners, 2,606 who were in the World Trade Center and on the ground, and 125 who were in the Pentagon. [220] The fourth plane was re-taken by the passengers and crew of the aircraft. While they were not able to land the plane safely, they were able to re-take control of the aircraft and crash it into an empty field in Pennsylvania, killing all 44 people including the four terrorists on board, thereby saving whatever target the terrorists were aiming for. Within two hours, both Twin Towers of the World Trade Center completely collapsed causing massive damage to the surrounding area and blanketing Lower Manhattan in toxic dust clouds. All in all, a total of 2,977 victims perished in the attacks. In response, President George W. Bush on September 20 announced a "War on Terror". On October 7, 2001, the United States and NATO then invaded Afghanistan to oust the Taliban regime, which had provided safe haven to al-Qaeda and its leader Osama bin Laden. [221]

    The federal government established new domestic efforts to prevent future attacks. The USA PATRIOT Act increased the government's power to monitor communications and removed legal restrictions on information sharing between federal law enforcement and intelligence services. The U.S. Department of Homeland Security was created to lead and coordinate federal counter-terrorism activities. [222] Since 2002, the U.S. government's indefinite detention of terrorism suspects captured abroad at the Guantanamo Bay detention camp, a prison at the U.S. naval base in Guantanamo Bay, Cuba, led to allegations of human rights abuses and violations of international law. [223] [224] [225]

    In 2003, from March 19 to May 1, the United States launched an invasion of Iraq, which led to the collapse of the Iraq government and the eventual capture of Iraqi dictator Saddam Hussein, with whom the U.S. had long-standing tense relations. The reasons for the invasion cited by the Bush administration included the spreading of democracy, the elimination of weapons of mass destruction [226] (a key demand of the UN as well, though later investigations found parts of the intelligence reports to be inaccurate), [227] and the liberation of the Iraqi people. Despite some initial successes early in the invasion, the continued Iraq War fueled international protests and gradually saw domestic support decline as many people began to question whether or not the invasion was worth the cost. [228] [229] In 2007, after years of violence by the Iraqi insurgency, President Bush deployed more troops in a strategy dubbed "the surge". While the death toll decreased, the political stability of Iraq remained in doubt. [230]

    In 2008, the unpopularity of President Bush and the Iraq war, along with the 2008 financial crisis, led to the election of Barack Obama, the first multiracial [231] president, with African-American ancestry. [232] After his election, Obama reluctantly continued the war effort in Iraq until August 31, 2010, when he declared that combat operations had ended. However, 50,000 American soldiers and military personnel were kept in Iraq to assist Iraqi forces, help protect withdrawing forces, and work on counter-terrorism until December 15, 2011, when the war was declared formally over and the last troops left the country. [233] At the same time, Obama increased American involvement in Afghanistan, starting a surge strategy using an additional 30,000 troops, while proposing to begin withdrawing troops sometime in December 2014. In 2009, on his second day in office, Obama issued an executive order banning the use of torture, [234] [235] a prohibition codified into law in 2016. [235] Obama also ordered the closure of secret CIA-run prisons overseas ("black sites"). [236] [237] Obama sought to close the Guantanamo Bay detention camp "as soon as practicable" and over his tenure the population of the detention camp declined from 242 inmates to 45 inmates the Guantanamo Review Task Force cleared many prisoners for release and resettlement abroad. [238] [239] Obama's efforts to close the prison entirely were stymied by Congress, which in 2011 enacted a measure blocking Obama from transferring any Guantanamo detainees to U.S. facilities. [238]

    In May 2011, after nearly a decade in hiding, the founder and leader of Al Qaeda, Osama bin Laden, was killed in Pakistan in a raid conducted by U.S. naval special forces acting under President Obama's direct orders. While Al Qaeda was near collapse in Afghanistan, affiliated organizations continued to operate in Yemen and other remote areas as the CIA used drones to hunt down and remove its leadership. [240] [241]

    The Boston Marathon bombing was a bombing incident, followed by subsequent related shootings, that occurred when two pressure cooker bombs exploded during the Boston Marathon on April 15, 2013. The bombs exploded near the marathon's finish line, killing 3 people and injuring an estimated 264 others.

    The Islamic State of Iraq and the Levant rose to prominence in September 2014. In addition to taking control of much of Western Iraq and Eastern Syria, ISIS also beheaded three journalists, two American and one British. These events lead to a major military offensive by the United States and its allies in the region.

    On December 28, 2014, Obama officially ended the combat mission in Afghanistan and promised a withdrawal of all remaining U.S. troops at the end of 2016 with the exception of the embassy guards. [242]

    Great Recession Edit

    In September 2008, the United States and most of Europe entered the longest post–World War II recession, often called the "Great Recession". [243] [244] Multiple overlapping crises were involved, especially the housing market crisis, a subprime mortgage crisis, soaring oil prices, an automotive industry crisis, rising unemployment, and the worst financial crisis since the Great Depression. The financial crisis threatened the stability of the entire economy in September 2008 when Lehman Brothers failed and other giant banks were in grave danger. [245] Starting in October the federal government lent $245 billion to financial institutions through the Troubled Asset Relief Program [246] which was passed by bipartisan majorities and signed by Bush. [247]

    Following his election victory by a wide electoral margin in November 2008, Bush's successor – Barack Obama – signed into law the American Recovery and Reinvestment Act of 2009, which was a $787 billion economic stimulus aimed at helping the economy recover from the deepening recession. Obama, like Bush, took steps to rescue the auto industry and prevent future economic meltdowns. These included a bailout of General Motors and Chrysler, putting ownership temporarily in the hands of the government, and the "cash for clunkers" program which temporarily boosted new car sales. [248]

    The recession officially ended in June 2009, and the economy slowly began to expand once again. [249] Beginning in December 2007, the unemployment rate steeply rose from around 5% to a peak of 10% before falling as the economy and labor markets experienced a recovery. [250] The economic expansion that followed the Great Recession was the longest in U.S. history [251] [252] strong growth led to the unemployment rate reaching a 50-year low in 2019. [253] Despite the strong economy, increases in the costs of housing, child care, higher education, and out-of-pocket healthcare expenses surpassed increases in wages, a phenomenon some referred to as an affordability crisis. [254] [255] The economic expansion came to an end in early 2020 with a sharp economic contraction largely caused by the coronavirus pandemic, which seriously affected the United States. [251] [252]

    Recent events Edit

    From 2009 to 2010, the 111th Congress passed major legislation such as the Patient Protection and Affordable Care Act, informally known as Obamacare, the Dodd–Frank Wall Street Reform and Consumer Protection Act [256] and the Don't Ask, Don't Tell Repeal Act, which were signed into law by President Obama. [257] Following the 2010 midterm elections, which resulted in a Republican-controlled House of Representatives and a Democratic-controlled Senate, [258] Congress presided over a period of elevated gridlock and heated debates over whether or not to raise the debt ceiling, extend tax cuts for citizens making over $250,000 annually, and many other key issues. [259] These ongoing debates led to President Obama signing the Budget Control Act of 2011. Following Obama's 2012 re-election, Congressional gridlock continued as Congressional Republicans' call for the repeal of the Patient Protection and Affordable Care Act along with other various demands, resulted in the first government shutdown since the Clinton administration and almost led to the first default on U.S. debt since the 19th century. As a result of growing public frustration with both parties in Congress since the beginning of the decade, Congressional approval ratings fell to record lows. [260]

    Recent events also include the rise of new political movements, such as the conservative Tea Party movement and the liberal Occupy movement. The debate over the issue of rights for the LGBT community, including same-sex marriage, began to shift in favor of same-sex couples. [261] In 2012, President Obama became the first president to openly support same-sex marriage, and the Supreme Court provided for federal recognition of same-sex unions and then nationwide legalized gay marriage.

    Political debate has continued over tax reform, immigration reform, income inequality, and U.S. foreign policy in the Middle East, particularly with regards to global terrorism, the rise of the Islamic State of Iraq and the Levant and an accompanying climate of Islamophobia. [262]

    The late 2010s were marked by widespread social upheaval and change in the United States. The #MeToo movement gained popularity, exposing alleged sexual harassment and abuse in the workplace. [263] Multiple prominent celebrities were accused of misconduct or rape. [264] During this period, the Black Lives Matter movement also gained support online, exacerbated by the police killings of multiple black Americans. [265] Multiple mass shootings, including the Pulse Nightclub shooting (2016) and the Las Vegas shooting, which claimed the lives of 61 people, led to increased calls for gun control and reform. Following the Stoneman Douglas High School Shooting in 2018, gun control advocates organized the March for our Lives, where millions of students across the country walked out of school to protest gun violence. [266] [267] The Women's March protest against Trump's presidency in 2017 was one of the largest protests in American history. [268]

    In 2016, Republican Donald Trump was elected President, [269] but U.S. intelligence agencies concluded that associates of the Russian government interfered in the election "to undermine public faith in the U.S. democratic process". This, along with questions about potential collusion between the Trump campaign and Russian officials, led to investigations by the FBI and Congress. [270] [271]

    During Trump's presidency, he espoused an "America First" ideology, placing restrictions on asylum seekers and imposing a widely controversial ban on immigration from seven Muslim-majority nations. Many of his executive orders and other actions were challenged in court. [272] [273] During his presidency he also engaged the United States in a trade war with China, imposing a wide range of tariffs on Chinese products. [274] In 2018, controversy erupted over the Trump administration's "zero tolerance" policy towards illegal immigrants, which involved the separation of thousands of undocumented children from their parents. After public outcry, Trump rescinded this policy. [275] Trump's term also saw the confirmation of three new justices to the Supreme Court, cementing a conservative majority.

    In 2019, a whistleblower complaint alleged that Trump had withheld foreign aid from Ukraine under the demand that they investigate the business dealings of the son of Trump's political opponent. [276] As a result, Trump was impeached for abuse of power and obstruction of congress, becoming the third president to have been impeached, but he was acquitted. [277]

    The worldwide COVID-19 pandemic having arrived in the United States was first confirmed in January 2020. As of June 2021 [update] , the U.S. has suffered more coronavirus deaths than any other nation with the death toll standing at 600,000, with the U.S. death toll surpassing the number of U.S. deaths in the Korean War and Vietnam War combined. [278] As a result of the COVID-19 pandemic, US life expectancy fell by over a year in 2020 and unemployment rates rose to the worst rates since the Great Depression. [279] The May 2020 murder of George Floyd caused mass protests and riots in many major cities over police brutality, with many states calling in the National Guard. [280]

    2020 was marked by a rise in domestic terrorist threats and widespread conspiracy theories around mail-in voting and COVID-19. [281] [282] The QAnon conspiracy theory, a fringe far-right political movement among some ardent conservatives, gained publicity and multiple major cities were hit by rioting and brawls between far-left antifascist affiliated groups and far right groups such as the Proud Boys. [283] [284] [285]

    Democrat Joe Biden defeated Trump in the 2020 presidential election, the first defeat of an incumbent president since 1992. [286] The election, with an exceptional amount of voting by mail and early voting due to the danger of getting COVID-19 at traditional voting booths, had historically high voter turnout. [287] Trump then repeatedly made false claims of massive voter fraud and election rigging, [288] [289] [290] [291] leading to the 2021 storming of the United States Capitol by supporters of Trump and right-wing militias. [292] That storming led to Trump's impeachment, as the only U.S president to be impeached twice. [293] [294] [295] The Senate later acquitted Trump, but some members of his own Republican party voted for both the impeachment and conviction on charges of inciting insurrection. [296] [297]

    The biggest mass vaccination campaign in U.S history kicked off on December 14, 2020, when ICU nurse Sandra Lindsay became the first person in the U.S to receive the Pfizer-BioNTech COVID-19 vaccine. As of June 2021, 41% of the U.S population has received a dose of the Pfizer BioNTech, Moderna, or Johnson & Johnson COVID-19 vaccine.


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