148-542: The National Polar-orbiting Operational Environmental Satellite System ( NPOESS ) was to be the United States ' next-generation satellite system that would monitor the Earth's weather, atmosphere , oceans , land, and near-space environment. NPOESS satellites were to host proven technologies and operational versions of sensors that were under operational-prototyping by NASA , at that time. The estimated launch date for
296-580: A " Special Relationship " with the United Kingdom and strong ties with Canada , Australia , New Zealand , the Philippines , Japan , South Korea , Israel , and several European Union countries ( France , Italy , Germany , Spain , and Poland ). The U.S. works closely with its NATO allies on military and national security issues, and with countries in the Americas through
444-542: A coordinated, continent-wide military effort. Finally, deteriorating relations between the British military establishment and the colonists, relations that were already less than positive, set the stage for further distrust and dislike of British troops. Following their victory in the French and Indian War, Britain began to assert greater control over local colonial affairs, resulting in colonial political resistance ; one of
592-534: A decentralized government that operated until 1789. After the British surrender at the siege of Yorktown in 1781 American sovereignty was internationally recognized by the Treaty of Paris (1783), through which the U.S. gained territory stretching west to the Mississippi River, north to present-day Canada, and south to Spanish Florida . The Northwest Ordinance (1787) established the precedent by which
740-658: A decline and abandonment of the area after 1400 CE . The Ancestral Puebloan culture covered present-day Four Corners region of the United States, comprising southern Utah , northern Arizona , northwestern New Mexico , and southwestern Colorado . It is believed that the Ancestral Puebloans developed, at least in part, from the Oshara tradition , who developed from the Picosa culture . They lived in
888-407: A few prominent industrialists , largely by their formation of trusts and monopolies to prevent competition. Tycoons led the nation's expansion in the railroad , petroleum , and steel industries. The United States emerged as a pioneer of the automotive industry . These changes were accompanied by significant increases in economic inequality , slum conditions , and social unrest , creating
1036-666: A global reach. The U.S. is a founding member of the World Bank , Organization of American States , NATO , and the United Nations , as well as a permanent member of the UN Security Council . The first documented use of the phrase "United States of America" is a letter from January 2, 1776. Stephen Moylan , a Continental Army aide to General George Washington , wrote to Joseph Reed , Washington's aide-de-camp , seeking to go "with full and ample powers from
1184-688: A great river believed to be the Mississippi River . Genetic and linguistic data connect the indigenous people of this continent with ancient northeast Asians. Archeological and linguistic data has enabled scholars to discover some of the migrations within the Americas. The Folsom tradition was characterized by the use of Folsom points as projectile tips and activities known from kill sites, where slaughter and butchering of bison took place. Folsom tools were left behind between 9000 BCE and 8000 BCE. Na-Dené -speaking peoples entered North America starting around 8000 BCE , reaching
1332-598: A period of heightened, overt racism following Reconstruction, a time often called the nadir of American race relations . A series of Supreme Court decisions, including Plessy v. Ferguson , emptied the Fourteenth and Fifteenth Amendments of their force, allowing Jim Crow laws in the South to remain unchecked, sundown towns in the Midwest, and segregation in communities across the country , which would be reinforced by
1480-488: A prominent leader in the early 1960s. The Great Society plan of President Lyndon Johnson 's administration resulted in groundbreaking and broad-reaching laws, policies and a constitutional amendment to counteract some of the worst effects of lingering institutional racism . The counterculture movement in the U.S. brought significant social changes, including the liberalization of attitudes toward recreational drug use and sexuality . It also encouraged open defiance of
1628-465: A range of structures that included small family pit houses, larger clan type structures, grand pueblos , and cliff sited dwellings. The Ancestral Puebloans possessed a complex network that stretched across the Colorado Plateau linking hundreds of communities and population centers. The culture is perhaps best known for the stone and earth dwellings built along cliff walls, particularly during
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#17327730194401776-526: A sense of manifest destiny . The Missouri Compromise attempted to balance the desire of northern states to prevent the expansion of slavery into new territories with that of southern states to extend it, admitting Missouri as a slave state and Maine as a free state. It further prohibited slavery in all other lands of the Louisiana Purchase north of the 36°30′ parallel . As Americans expanded further into land inhabited by Native Americans,
1924-614: A sense of American identity as well. Men who otherwise never left their own colony now traveled across the continent to fight alongside men from decidedly different backgrounds but who were no less "American". British officers trained American officers for battle, most notably George Washington ; these officers would lend their skills and expertise to the colonists' cause during the American Revolutionary War to come. In addition, colonial legislatures and officials found it necessary to cooperate intensively in pursuit of
2072-654: A subsistence strategy still grounded in the Eastern Agricultural Complex and hunting rather than on the maize plant as would happen in the succeeding Plaquemine Mississippian period. The culture was originally defined by the unique decoration on grog-tempered ceramic ware by James A. Ford after his investigations at the Mazique Archeological Site . He had studied both the Mazique and Coles Creek Sites, and almost went with
2220-401: A year). Juvenile correctional facilities are operated by local or state governments and serve as longer-term placements for any minor adjudicated as delinquent and ordered by a judge to be confined. As of January 2023, the United States has the sixth-highest per capita incarceration rate in the world—531 people per 100,000 inhabitants—and the largest prison and jail population in
2368-558: Is 12,000 years ago; the earliest remains undetermined. The archaeological periods used are the classifications of archaeological periods and cultures established in Gordon Willey and Philip Phillips ' 1958 book Method and Theory in American Archaeology which divided the archaeological record in the Americas into five phases; see Archaeology of the Americas . The Paleo-Indian or Lithic stage lasted from
2516-591: Is believed to be the first widespread culture in the Americas. Over time, indigenous North American cultures grew increasingly sophisticated, and some, such as the Mississippian culture , developed agriculture , architecture , and complex societies . In the post-archaic period , the Mississippian cultures were located in the midwestern , eastern , and southern regions, and the Algonquian in
2664-505: Is identified by the distinctive Clovis point , a flaked flint spear-point with a notched flute, by which it was inserted into a shaft. Dating of Clovis materials has been by association with animal bones and by the use of carbon dating methods. Recent reexaminations of Clovis materials using improved carbon-dating methods produced results of 11,050 and 10,800 radiocarbon years BP (roughly 9100 to 8850 BCE). Numerous Paleoindian cultures occupied North America, with some arrayed around
2812-498: Is known as the presidential system , in contrast to the parliamentary system , where the executive is part of the legislative body. Many countries around the world imitated this aspect of the 1789 Constitution of the United States , especially in the Americas. The Constitution is silent on political parties. However, they developed independently in the 18th century with the Federalist and Anti-Federalist parties. Since then,
2960-572: Is lacking to support such an interpretation. Gordon Wood wrote, "The English colonists did not need the Indians to tell them about federalism or self-government. The New England Confederation was organized as early as 1643." The historian Jack Rakove , a specialist in early American history, in 2005 noted that the voluminous documentation of the Constitutional proceedings "contain no significant reference to Iroquois." Secondly, he notes: "All
3108-438: Is now the United States experienced conflicts with Native Americans, they also engaged in trade, exchanging European tools for food and animal pelts. Relations ranged from close cooperation to warfare and massacres. The colonial authorities often pursued policies that forced Native Americans to adopt European lifestyles, including conversion to Christianity. Along the eastern seaboard, settlers trafficked African slaves through
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#17327730194403256-552: Is the federal agency charged with addressing most environmental-related issues . The idea of wilderness has shaped the management of public lands since 1964, with the Wilderness Act . The Endangered Species Act of 1973 provides a way to protect threatened and endangered species and their habitats. The United States Fish and Wildlife Service implements and enforces the Act. In 2024, the U.S. ranked 34th among 180 countries in
3404-603: The Allies of World War I , helping to turn the tide against the Central Powers . In 1920, a constitutional amendment granted nationwide women's suffrage . During the 1920s and '30s, radio for mass communication and the invention of early television transformed communications nationwide. The Wall Street Crash of 1929 triggered the Great Depression , which President Franklin D. Roosevelt responded to with
3552-543: The Archaic stage arose, during which hunter-gatherer communities developed complex societies across North America. The Mound Builders created large earthworks, such as at Watson Brake and Poverty Point , which date to 3500 BCE and 2200 BCE, respectively, indicating early social and organizational complexity. By 1000 BCE, Native societies in the Woodland period developed advanced social structures and trade networks, with
3700-553: The Atlantic slave trade . The original Thirteen Colonies that would later found the United States were administered as possessions of Great Britain , and had local governments with elections open to most white male property owners . The colonial population grew rapidly, eclipsing Native American populations; by the 1770s, the natural increase of the population was such that only a small minority of Americans had been born overseas. The colonies' distance from Britain allowed for
3848-817: The Bering land bridge more than 12,000 years ago, and formed various civilizations and societies . British colonization led to the first settlement of the Thirteen Colonies in Virginia in 1607. Clashes with the British Crown over taxation and political representation sparked the American Revolution , with the Second Continental Congress formally declaring independence on July 4, 1776. Following its victory in
3996-468: The Calusa people, the attempt was abandoned. He was later followed by other Spanish explorers, such as Pánfilo de Narváez in 1528 and Hernando de Soto in 1539. In 1536, a group of four Spanish explorers and one enslaved black Moorish man, found themselves stranded on the coast of what is now Texas. The group was led by Álvar Núñez Cabeza de Vaca , and for a time they were held in semi captivity by
4144-584: The Columbian exchange suggests explorers from the Christopher Columbus expedition contracted syphilis from indigenous peoples and carried it back to Europe, where it spread widely. Other researchers believe that the disease existed in Europe and Asia before Columbus and his men returned from exposure to indigenous peoples of the Americas, but that they brought back a more virulent form. In
4292-531: The Dawes Act , which undermined communal landholding. In the 20th century, Native Americans served in significant numbers during World War II, marking a turning point for Indigenous visibility and involvement in broader American society. Post-war, Native activism grew, with movements such as the American Indian Movement (AIM) drawing attention to Indigenous rights. Landmark legislation like
4440-549: The Environmental Performance Index . The country joined the Paris Agreement on climate change in 2016 and has many other environmental commitments. The United States is a federal republic of 50 states and a separate federal capital district, Washington, D.C. It also asserts sovereignty over five unincorporated territories and several uninhabited island possessions . The U.S. is
4588-500: The Federal Bureau of Investigation (FBI) and the U.S. Marshals Service have national jurisdiction and specialized duties, such as protecting civil rights , national security and enforcing U.S. federal courts ' rulings and federal laws. State courts conduct most civil and criminal trials, and federal courts handle designated crimes and appeals of state court decisions . There is no unified "criminal justice system" in
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4736-720: The Great Lakes , Mississippi River and Gulf of Mexico . British colonization of the East Coast began with the Virginia Colony (1607) and Plymouth Colony (1620). The Mayflower Compact and the Fundamental Orders of Connecticut established precedents for representative self-governance and constitutionalism that would develop throughout the American colonies. While European settlers in what
4884-719: The Great Lakes region and along the Eastern Seaboard , while the Hohokam culture and Ancestral Puebloans inhabited the southwest . Native population estimates of what is now the United States before the arrival of European immigrants range from around 500,000 to nearly 10 million. Christopher Columbus began exploring the Caribbean for Spain in 1492, leading to Spanish-speaking settlements and missions from Puerto Rico and Florida to New Mexico and California . France established its own settlements along
5032-537: The Great Plains and Great Lakes of the modern United States of America and Canada, as well as adjacent areas to the West and Southwest. According to the oral histories of many of the indigenous peoples of the Americas, they have been living on this continent since their genesis, described by a wide range of traditional creation stories . Other tribes have stories that recount migrations across long tracts of land and
5180-670: The Hopewell tradition connecting the Eastern Woodlands to the Great Lakes and the Gulf of Mexico . This period led to the Mississippian culture , with large urban centers like Cahokia —a city with complex mounds and a population exceeding 20,000 by 1250 CE. From the 15th century onward, European contact drastically reshaped the Americas. Explorers and settlers introduced diseases, causing massive Indigenous population declines, and engaged in violent conflicts with Native groups. By
5328-524: The House of Representatives , a lower house based on population; and the Senate , an upper house based on equal representation for each state. Federalism provides substantial autonomy to the 50 states, while the country's political culture promotes liberty , equality , individualism , personal autonomy , and limited government . One of the world's most developed countries , the United States has had
5476-535: The Indian Self-Determination and Education Assistance Act of 1975 recognized tribal autonomy, leading to the establishment of Native-run schools and economic initiatives. Tribal sovereignty has continued to evolve, with legal victories and federal acknowledgments supporting cultural revitalization. By the 21st century, Native Americans had achieved increased control over tribal lands and resources, although many communities continue to grapple with
5624-806: The Iroquois and the Hurons , the northern Algonquians , and their French allies. During the war the Iroquois destroyed several large tribal confederacies—including the Huron , Neutral , Erie , Susquehannock , and Shawnee , and became dominant in the region and enlarged their territory. King Philip's War , also called Metacom 's War or Metacom's Rebellion, was an armed conflict between Native American inhabitants of present-day southern New England and English colonists and their Native American allies from 1675 to 1676. It continued in northern New England (primarily on
5772-641: The Iroquois nations ' political confederacy and democratic government as being influences for the development of the Articles of Confederation and the United States Constitution . In October 1988, the U.S. Congress passed Concurrent Resolution 331 to recognize the influence of the Iroquois Constitution upon the U.S. Constitution and Bill of Rights. However, leading historians of the period note that historic evidence
5920-718: The Mazique culture , but decided on the less historically involved sites name. It is ancestral to the Plaquemine culture . The Mississippian culture which extended throughout the Ohio and Mississippi valleys and built sites throughout the Southeast created the largest earthworks in North America north of Mexico, most notably at Cahokia , on a tributary of the Mississippi River in present-day Illinois. The Hohokam culture
6068-596: The Midwest . At the same time, about one million French Canadians migrated from Quebec to New England . During the Great Migration , millions of African Americans left the rural South for urban areas in the North. Alaska was purchased from Russia in 1867. The Compromise of 1877 effectively ended Reconstruction and white supremacists took local control of Southern politics . African Americans endured
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6216-688: The National Park Service and other agencies. About 28% of the country's land is publicly owned and federally managed, primarily in the Western States . Most of this land is protected , though some is leased for commercial use, and less than one percent is used for military purposes. Environmental issues in the United States include debates on non-renewable resources and nuclear energy , air and water pollution , biodiversity , logging and deforestation , and climate change . The U.S. Environmental Protection Agency (EPA)
6364-652: The New Deal , a series of sweeping programs and public works projects combined with financial reforms and regulations . All were intended to protect against future economic depressions. Initially neutral during World War II , the U.S. began supplying war materiel to the Allies of World War II in March 1941 and entered the war in December after the Empire of Japan 's attack on Pearl Harbor . The U.S. developed
6512-778: The Organization of American States and the United States–Mexico–Canada Free Trade Agreement . In South America, Colombia is traditionally considered to be the closest ally of the United States. The U.S. exercises full international defense authority and responsibility for Micronesia , the Marshall Islands , and Palau through the Compact of Free Association . It has increasingly conducted strategic cooperation with India , but its ties with China have steadily deteriorated. Since 2014,
6660-671: The Pacific Northwest by 5000 BCE , and from there migrating along the Pacific Coast and into the interior. Linguists, anthropologists, and archeologists believe their ancestors constituted a separate migration into North America, later than the first Paleo-Indians. They migrated into Alaska and northern Canada, south along the Pacific Coast, into the interior of Canada, and south to the Great Plains and
6808-539: The Pentium microprocessor in accordance with Moore's law , rechargeable lithium-ion batteries , the first gene therapy trial, and cloning either emerged in the U.S. or were improved upon there. The Human Genome Project was formally launched in 1990, while Nasdaq became the first stock market in the United States to trade online in 1998. In the Gulf War of 1991, an American-led international coalition of states expelled an Iraqi invasion force that had occupied neighboring Kuwait . The September 11 attacks on
6956-422: The Pueblo II and Pueblo III eras. The Iroquois League of Nations or "People of the Long House", based in present-day upstate and western New York , had a confederacy model from the mid-15th century. It has been suggested that their culture contributed to political thinking during the development of the later United States government. Their system of affiliation was a kind of federation, different from
7104-420: The Southwestern Archaic tradition centered in north-central New Mexico , the San Juan Basin , the Rio Grande Valley, southern Colorado , and southeastern Utah . The Post-Archaic stage includes the Formative, Classic and Post-Classic stages in Willey and Phillipp's scheme. The Formative stage lasted from 1000 BCE until about 500 CE , the Classic from about 500 CE to 1200 CE , while
7252-418: The Soviet Union's collapse and the end of the Cold War in 1991, the U.S. emerged as the world's sole superpower , wielding significant geopolitical influence globally . The U.S. national government is a presidential constitutional federal republic and liberal democracy with three separate branches : legislative , executive , and judicial . It has a bicameral national legislature composed of
7400-399: The Spanish–American War . (The Philippines was granted full independence from the U.S. on July 4, 1946, following World War II. Puerto Rico and Guam have remained U.S. territories.) American Samoa was acquired by the United States in 1900 after the Second Samoan Civil War . The U.S. Virgin Islands were purchased from Denmark in 1917. The United States entered World War I alongside
7548-462: The Trail of Tears resulted in many deaths as did enslavement ; continued tribal internal warfare ; and a high rate of intermarriage also led to a reduction in the numbers of Native Americans. Most mainstream scholars believe that, among the various contributing factors, epidemic disease was the overwhelming cause of the population decline of the American natives because of their lack of immunity to new diseases brought from Europe. With
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#17327730194407696-399: The cotton gin made the institution increasingly profitable for Southern elites . This sectional conflict regarding slavery culminated in the American Civil War (1861–1865). Eleven slave states seceded and formed the Confederate States of America , while the other states remained in the Union . War broke out in April 1861 after the Confederates bombarded Fort Sumter . After
7844-413: The fall of communism and the collapse of the Soviet Union , which marked the end of the Cold War and left the United States as the world's sole superpower . The 1990s saw the longest recorded economic expansion in American history , a dramatic decline in U.S. crime rates , and advances in technology . Throughout this decade, technological innovations such as the World Wide Web , the evolution of
7992-558: The fur trade in the northern areas tended to ally with French forces against British colonial militias. Native Americans fought on both sides of the conflict. The greater number of tribes fought with the French in the hopes of checking British expansion. The British had made fewer allies, but it was joined by some tribes that wanted to prove assimilation and loyalty in support of treaties to preserve their territories. They were often disappointed when such treaties were later overturned. The tribes had their own purposes, using their alliances with
8140-445: The largest nominal GDP since about 1890 and accounted for over 15% of the global economy in 2023. It possesses by far the largest amount of wealth of any country and has the highest disposable household income per capita among OECD countries. The U.S. ranks among the world's highest in economic competitiveness , productivity , innovation , human rights , and higher education . Its hard power and cultural influence have
8288-513: The settlement of the Americas , migrations of humans from Eurasia to the Americas took place via Beringia , a land bridge which connected the two continents across what is now the Bering Strait . The number and composition of the successive migrations is still being debated. Falling sea levels associated with an intensive period of Quaternary glaciation created the Bering land bridge that joined Siberia to Alaska about 60–25,000 years ago. The latest this migration could have taken place
8436-452: The 100 years following the arrival of the Spanish to the Americas, large disease epidemics depopulated large parts of the Eastern Woodlands in the 15th century. In 1618–1619, smallpox killed 90% of the Native Americans in the area of the Massachusetts Bay . Historians believe many Mohawk in present-day New York became infected after contact with children of Dutch traders in Albany in 1634. The disease swept through Mohawk villages, reaching
8584-428: The 16th century, Spaniards and other Europeans brought horses to Mexico. Some of the horses escaped and began to breed and increase their numbers in the wild. The early American horse had been game for the earliest humans on the continent. It was hunted to extinction about 7000 BCE , just after the end of the last glacial period . Native Americans benefited from the reintroduction of horses, as they adopted
8732-406: The 1775 Battles of Lexington and Concord , igniting the American Revolutionary War . At the Second Continental Congress , the colonies appointed George Washington commander-in-chief of the Continental Army , and created a committee that named Thomas Jefferson to draft the Declaration of Independence . Two days after passing the Lee Resolution to create an independent nation the Declaration
8880-408: The 1775–1783 Revolutionary War , the country continued to expand westward across North America , resulting in the dispossession of native inhabitants . As more states were admitted , a North–South division over slavery led to the secession of the Confederate States of America , which fought states remaining in the Union in the 1861–1865 American Civil War . With the victory and preservation of
9028-447: The 1986 theory put forward by linguist Joseph Greenberg that the Americas must have been populated in three waves, based on language differences. The Clovis culture , a megafauna hunting culture, is primarily identified by use of fluted spear points. Artifacts from this culture were first excavated in 1932 near Clovis, New Mexico . The Clovis culture ranged over much of North America and also appeared in South America. The culture
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#17327730194409176-406: The 19th century, westward U.S. expansion, rationalized by Manifest destiny , pressured tribes into forced relocations like the Trail of Tears , which decimated communities and redefined Native territories. Despite resistance in events like the Sioux Uprising and Battle of Little Bighorn , Native American lands continued to be reduced through policies like the Indian Removal Act of 1830 and later
9324-466: The 2010s, political polarization in the country increased between liberal and conservative factions. This polarization was capitalized upon in the January 2021 Capitol attack , when a mob of insurrectionists entered the U.S. Capitol and sought to prevent the peaceful transfer of power in an attempted self-coup d'état . The United States is the world's third-largest country by total area behind Russia and Canada. The 48 contiguous states and
9472-449: The American Southwest. They were the earliest ancestors of the Athabascan -speaking peoples, including the present-day and historical Navajo and Apache . They constructed large multi-family dwellings in their villages, which were used seasonally. People did not live there year-round, but for the summer to hunt and fish, and to gather food supplies for the winter. The Archaic period lasted until about 1000 BCE . A major culture of
9620-426: The American West have an alpine climate . The climate is arid in the Southwest, Mediterranean in coastal California , and oceanic in coastal Oregon , Washington , and southern Alaska . Most of Alaska is subarctic or polar . Hawaii , the southern tip of Florida and U.S. territories in the Caribbean and Pacific are tropical . States bordering the Gulf of Mexico are prone to hurricanes, and most of
9768-431: The Archaic stage was the Mound builders , who stretched from the Great Lakes to the Mississippi and Ohio rivers. Since the 1990s, archeologists have explored and dated eleven Middle Archaic sites in present-day Louisiana and Florida at which early cultures built complexes with multiple earthwork mounds ; they were societies of hunter-gatherers rather than the settled agriculturalists believed necessary according to
9916-420: The Declaration of Independence on July 4, 1776. The term "United States" and the initialism "U.S.", used as nouns or as adjectives in English, are common short names for the country. The initialism "USA", a noun, is also common. "United States" and "U.S." are the established terms throughout the U.S. federal government , with prescribed rules. In English, the term "America" rarely refers to topics unrelated to
10064-404: The District of Columbia occupy a combined area of 3,119,885 square miles (8,080,470 km ). The coastal plain of the Atlantic seaboard gives way to inland forests and rolling hills in the Piedmont plateau region. The Appalachian Mountains and the Adirondack massif separate the East Coast from the Great Lakes and the grasslands of the Midwest . The Mississippi River System ,
10212-458: The Elder concluded that major military resources needed to be devoted to North America to win the war against France. For the first time, the continent became one of the main theaters of what could be termed a " world war ". The British colonies' position as an integral part of the British Empire became more apparent during the war, with British military and civilian officials becoming a more significant presence in American life. The war increased
10360-409: The European powers to battle traditional Native enemies. Native American culture began to have an influence on European thought in this period. Some Europeans considered Native American societies to be representative of a golden age known to them only in folk history. The political theorist Jean Jacques Rousseau wrote that the idea of freedom and democratic ideals was born in the Americas because "it
10508-465: The January 1863 Emancipation Proclamation , many freed slaves joined the Union army . The war began to turn in the Union's favor following the 1863 Siege of Vicksburg and Battle of Gettysburg , and the Confederacy surrendered in 1865 after the Union's victory in the Battle of Appomattox Court House . The Reconstruction era followed the war. After the assassination of President Abraham Lincoln , Reconstruction Amendments were passed to protect
10656-522: The Late Archaic period. Evidence of this culture has been found at more than 100 sites, from the major complex at Poverty Point, Louisiana (a UNESCO World Heritage site ) across a 100-mile (160 km) range to the Jaketown Site near Belzoni, Mississippi . Poverty Point is a 1 square mile (2.6 km ) complex of six major earthwork concentric rings, with additional platform mounds at
10804-808: The Maine frontier) even after King Philip was killed, until a treaty was signed at Casco Bay in April 1678. According to a combined estimate of loss of life in Schultz and Tougias' King Philip's War, The History and Legacy of America's Forgotten Conflict (based on sources from the Department of Defense, the Bureau of Census, and the work of Colonial historian Francis Jennings), 800 out of 52,000 English colonists of New England (1 out of every 65) and 3,000 out of 20,000 natives (3 out of every 20) lost their lives due to
10952-562: The NOAA Polar Operational Environmental Satellites (POES) series. The NPOESS Preparatory Project (NPP) was planned as a pathfinder mission for NPOESS. The project had to go through three Nunn-McCurdy reviews , Congressional hearings that are automatically triggered when a program goes over budget by more than 25%. Suomi NPP was launched five years behind schedule, on October 28, 2011. The White House announced on February 1, 2010, that
11100-758: The NOAA Satellite Operations Facility (NSOF) in Suitland, MD . TRW , later Northrop Grumman Aerospace Systems (NGAS) after TRW was acquired by Northrop Grumman, was the primary system integrator for the NPOESS project. Raytheon , Ball Aerospace & Technologies Corp. and Boeing were developing the sensors. The NPOESS satellites were intended to be a replacement for both the United States Department of Defense's Defense Meteorological Satellite Program (DMSP) and
11248-549: The NPOESS satellite partnership was to be dissolved, and that two separate lines of polar-orbiting satellites to serve military and civilian users would be pursued instead: United States The United States of America ( USA ), commonly known as the United States ( U.S. ) or America , is a country primarily located in North America . It is a federal union of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to
11396-624: The Onondaga at Lake Ontario by 1636, and the lands of the western Iroquois by 1679, as it was carried by Mohawk and other Native Americans who traveled the trading routes. The high rate of fatalities caused breakdowns in Native American societies and disrupted generational exchange of culture. After European explorers reached the West Coast in the 1770s, smallpox rapidly killed at least 30% of Northwest Coast Native Americans. For
11544-492: The Post-Classic refers to 1200 CE until the present day. It also includes the Woodland period of North American pre-Columbian , whose culture refers to the time period from roughly 1000 BCE to 1000 CE in the eastern part of North America. The term "Woodland" was coined in the 1930s and refers to prehistoric sites dated between the Archaic period and the Mississippian cultures . The Adena culture
11692-611: The Rocky Mountains, the Yellowstone Caldera , is the continent's largest volcanic feature. In 2021, the United States had 8% of global permanent meadows and pastures and 10% of cropland. With its large size and geographic variety, the United States includes most climate types. East of the 100th meridian , the climate ranges from humid continental in the north to humid subtropical in the south. The western Great Plains are semi-arid . Many mountainous areas of
11840-647: The U.S. has become a key ally of Ukraine ; it has also provided the country with significant military equipment and other support in response to Russia's 2022 invasion . The president is the commander-in-chief of the United States Armed Forces and appoints its leaders, the secretary of defense and the Joint Chiefs of Staff . The Department of Defense , which is headquartered at the Pentagon near Washington, D.C., administers five of
11988-661: The U.S. territories." Despite disparate systems of confinement, four main institutions dominate: federal prisons , state prisons , local jails, and juvenile correctional facilities . Federal prisons are run by the Federal Bureau of Prisons and hold people who have been convicted of federal crimes, including pretrial detainees. State prisons, run by the official department of correction of each state, hold sentenced people serving prison time (usually longer than one year) for felony offenses. Local jails are county or municipal facilities that incarcerate defendants prior to trial; they also hold those serving short sentences (typically under
12136-464: The United States and the peaceful transfer of power , respectively. The Louisiana Purchase of 1803 from France nearly doubled the territory of the United States. Lingering issues with Britain remained , leading to the War of 1812 , which was fought to a draw. Spain ceded Florida and its Gulf Coast territory in 1819. In the late 18th century, American settlers began to expand westward , many with
12284-831: The United States entered the Cold War, where geopolitical tensions between the U.S. and the Soviet Union led the two countries to dominate world affairs . The U.S. utilized the policy of containment to limit the USSR's sphere of influence, and prevailed in the Space Race , which culminated with the first crewed Moon landing in 1969. Domestically, the U.S. experienced economic growth , urbanization , and population growth following World War II . The civil rights movement emerged, with Martin Luther King Jr. becoming
12432-666: The United States has operated as a de facto two-party system , though the parties in that system have been different at different times. The two main national parties are presently the Democratic and the Republican . The former is perceived as relatively liberal in its political platform while the latter is perceived as relatively conservative . In the American federal system , sovereign powers are shared between two levels of elected government: national and state. People in
12580-593: The United States in 2001 by the pan-Islamist militant organization al-Qaeda led to the war on terror , and subsequent military interventions in Afghanistan and Iraq . The cultural impact of the attacks was profound and long-lasting. The U.S. housing bubble culminated in 2007 with the Great Recession , the largest economic contraction since the Great Depression. Coming to a head in
12728-601: The United States of America to Spain" to seek assistance in the Revolutionary War effort. The first known public usage is an anonymous essay published in the Williamsburg newspaper, The Virginia Gazette , on April 6, 1776. By June 1776, the "United States of America" appeared in the Articles of Confederation and the Declaration of Independence . The Second Continental Congress adopted
12876-661: The United States, slavery was abolished nationally . By 1900, the country had established itself as a great power , a status solidified after its involvement in World War I . After Japan 's attack on Pearl Harbor in December 1941, the U.S. entered World War II . Its aftermath left the U.S. and the Soviet Union as the world's two superpowers and led to the Cold War , during which both countries struggled for ideological dominance and international influence . Following
13024-541: The United States, despite the usage of "the Americas " as the totality of North and South America. "The States" is an established colloquial shortening of the name, used particularly from abroad; "stateside" is the corresponding adjective or adverb. The first inhabitants of North America migrated from Siberia across the Bering land bridge about 12,000 years ago; the Clovis culture , which appeared around 11,000 BC,
13172-624: The United States, except Iran , North Korea , and Bhutan . Though Taiwan does not have formal diplomatic relations with the U.S., it maintains close unofficial relations. The United States regularly supplies Taiwan with military equipment to deter potential Chinese aggression. Its geopolitical attention also turned to the Indo-Pacific when the United States joined the Quadrilateral Security Dialogue with Australia, India, and Japan. The United States has
13320-509: The United States. The American prison system is largely heterogenous, with thousands of relatively independent systems operating across federal, state, local, and tribal levels. In 2023, "these systems [held] almost 2 million people in 1,566 state prisons, 98 federal prisons, 3,116 local jails, 1,323 juvenile correctional facilities, 181 immigration detention facilities, and 80 Indian country jails, as well as in military prisons , civil commitment centers, state psychiatric hospitals, and prisons in
13468-489: The assumption that they were saving a barbaric, pagan world by spreading Christian civilization . In the Spanish colonization of the Americas , the policy of Indian Reductions resulted in the forced conversions to Catholicism of the indigenous people in northern Nueva España . They had long-established spiritual and religious traditions and theological beliefs which included human sacrifice. What developed during
13616-597: The coastal natives. The enslaved Moor, whose name was Esterban, later became a scout who had encounters with the Zunis . Rumors of the fabled Seven Cities of Gold being located in the northern area of New Spain began to emerge amongst the Spaniards. And in 1540 Francisco Vázquez de Coronado , using the information gained by the scouting expeditions of Esterban and Fray Marcos, set out to conquer Cíbola. Coronado and his band of over one thousand found no cities of gold. What
13764-576: The colonial years and since has been a syncretic Catholicism that absorbed and reflected indigenous beliefs; the religion changed in New Spain. From the 18th through the 19th centuries, the population of Native Americans declined in the following ways: epidemic diseases brought from Europe; violence and warfare, such as the Indian Wars at the hands of European explorers and colonists; displacement from their lands including forced marches such as
13912-526: The conquistadors did encounter was Hawikuh, a Zuni town. There the Zuni people, having never seen horses or a band of this size before, were frightened. Although Coronado had been explicitly instructed not to harm the natives, when the Zuni refused his insistence for food and supplies, Coronado ordered an attack on the town. Through the mid 17th century the Beaver Wars were fought over the fur trade between
14060-457: The contiguous United States are in the State of California, about 84 miles (135 km) apart. At an elevation of 20,310 feet (6,190.5 m), Alaska's Denali is the highest peak in the country and continent. Active volcanoes are common throughout Alaska's Alexander and Aleutian Islands , and Hawaii consists of volcanic islands. The supervolcano underlying Yellowstone National Park in
14208-556: The country's GDP. The U.S. has 42% of the world's nuclear weapons —the second-largest share after Russia. The United States has the third-largest combined armed forces in the world, behind the Chinese People's Liberation Army and Indian Armed Forces . The military operates about 800 bases and facilities abroad, and maintains deployments greater than 100 active duty personnel in 25 foreign countries. State defense forces (SDFs) are military units that operate under
14356-469: The country's territory would expand with the admission of new states , rather than the expansion of existing states. The U.S. Constitution was drafted at the 1787 Constitutional Convention to overcome the limitations of the Articles. It went into effect in 1789, creating a federal republic governed by three separate branches that together ensured a system of checks and balances . George Washington
14504-713: The development of self-governance, and the First Great Awakening , a series of Christian revivals , fueled colonial interest in religious liberty . For a century, the American colonists had been providing their own troops and materiel in conflicts with indigenous peoples allied with Britain's colonial rivals , especially France, and the Americans had begun to develop a sense of self-defense and self-reliance separate from Britain. The French and Indian War (1754–1763) took on new significance for all North American colonists after Parliament under William Pitt
14652-455: The earliest inhabitants classified as Paleo-Indians , who spread throughout the Americas, diversifying into numerous culturally distinct nations. Major Paleo-Indian cultures included the Clovis and Folsom traditions , identified through unique spear points and large-game hunting methods, especially during the Lithic stage . Around 8000 BCE, as the climate stabilized, new cultural periods like
14800-580: The environment for labor unions to begin to flourish . This period eventually ended with the advent of the Progressive Era , which was characterized by significant reforms. Pro-American elements in Hawaii overthrew the Hawaiian monarchy ; the islands were annexed in 1898. That same year, Puerto Rico , the Philippines , and Guam were ceded to the U.S. by Spain after the latter's defeat in
14948-547: The federal government established a smallpox vaccination program for Native Americans ( The Indian Vaccination Act of 1832 ). It was the first federal program created to address the health problems of Native Americans. With the meeting of two worlds, animals, insects, and plants were carried from one to the other, both deliberately and by chance, in what is called the Columbian exchange . Sheep, pigs, horses, and cattle were all Old World animals that were introduced to contemporary Native Americans who never knew such animals. In
15096-474: The federal government often applied policies of Indian removal or assimilation . The Trail of Tears (1830–1850) was a U.S. government policy that forcibly removed and displaced most Native Americans living east of the Mississippi River to lands far to the west. These and earlier organized displacements prompted a long series of American Indian Wars west of the Mississippi. The Republic of Texas
15244-673: The first NPOESS satellite, "C1" or "Charlie 1" was around 2013. Issues with sensor developments were the primary cited reason for delays and cost-overruns. NPOESS was a tri-agency program led by an Integrated Program Office (IPO) containing staff from the US Department of Defense , National Oceanic and Atmospheric Administration , and NASA. NPOESS was to be operated by the NOAA/ National Environmental Satellite, Data, and Information Service (NESDIS) / NPOESS Program Executive Office Flight Operations at
15392-567: The first arrival of people in the Americas until about 5000/3000 BCE (in North America). Three major migrations occurred, as traced by linguistic and genetic data; the early Paleoamericans soon spread throughout the Americas, diversifying into many hundreds of culturally distinct nations and tribes. By 8000 BCE the North American climate was very similar to today's. A study published in 2012 gives genetic backing to
15540-622: The first contacts between Native Americans in what was to become the United States and European explorers and settlers. One of the first major contacts, in what would be called the American Deep South , occurred when the conquistador Juan Ponce de León landed in La Florida in April 1513. There he encountered the Timucuan and Ais peoples. De León returned in 1521 in an attempt at colonization, but after fierce resistance from
15688-606: The first nuclear weapons and used them against the Japanese cities of Hiroshima and Nagasaki in August 1945, ending the war. The United States was one of the " Four Policemen " who met to plan the post-war world , alongside the United Kingdom , Soviet Union , and China . The U.S. emerged relatively unscathed from the war, with even greater economic power and international political influence . After World War II,
15836-510: The founding of US, tens of thousands of years ago with the settlement of the Americas by the Paleo-Indians . The Eurasian migration to the Americas occurred over millennia via Beringia , a land bridge between Siberia and Alaska , as early humans spread southward and eastward, forming distinct cultures and societies. Archaeological evidence suggests these migrations began 20,000 years ago and continued until around 12,000 years ago, with
15984-463: The integration of Army National Guard units and personnel into the U.S. Army and (since 1947) the U.S. Air Force. There are about 18,000 U.S. police agencies from local to national level in the United States. Law in the United States is mainly enforced by local police departments and sheriff departments in their municipal or county jurisdictions. The state police departments have authority in their respective state , and federal agencies such as
16132-481: The key political concepts that were the stuff of American political discourse before the Revolution and after, had obvious European antecedents and referents: bicameralism, separation of powers, confederations, and the like." American Indians have played a central role in shaping the history of the nation, and they are deeply woven into the social fabric of much of American life.... During the last three decades of
16280-430: The legacy of displacement and economic challenges. Urban migration has also grown, with over 70% of Native Americans residing in cities by 2012, navigating issues of cultural preservation and discrimination. Continuing legal and social efforts address these concerns, building on centuries of resilience and adaptation that characterize Indigenous history across the Americas. According to the most generally accepted theory of
16428-482: The military draft (leading to the end of conscription in 1973) and wide opposition to U.S. intervention in Vietnam (with the U.S. totally withdrawing in 1975). A societal shift in the roles of women was significantly responsible for the large increase in female paid labor participation during the 1970s, and by 1985 the majority of American women aged 16 and older were employed. The late 1980s and early 1990s saw
16576-612: The most attractive to the population are the most vulnerable. The U.S. is one of 17 megadiverse countries containing large numbers of endemic species : about 17,000 species of vascular plants occur in the contiguous United States and Alaska, and over 1,800 species of flowering plants are found in Hawaii, few of which occur on the mainland. The United States is home to 428 mammal species, 784 birds, 311 reptiles, 295 amphibians , and around 91,000 insect species. There are 63 national parks , and hundreds of other federally managed parks, forests, and wilderness areas , managed by
16724-662: The most violent, the California genocide of thousands of Native inhabitants, lasted into the early 1870s, just as additional western territories and states were created. During the colonial period, slavery had been legal in the American colonies , though the practice began to be significantly questioned during the American Revolution. States in the North enacted abolition laws , though support for slavery strengthened in Southern states , as inventions such as
16872-482: The next 80 to 100 years, smallpox and other diseases devastated native populations in the region. Puget Sound area populations, once estimated as high as 37,000 people, were reduced to only 9,000 survivors by the time settlers arrived en masse in the mid-19th century. The Spanish missions in California did not have a large effect on the overall population of Native Americans because the small number of missions
17020-660: The north and Mexico to the south, with the states of Alaska to the northwest and the archipelagic Hawaii in the Pacific Ocean . The United States also asserts sovereignty over five major island territories and various uninhabited islands . The country has the world's third-largest land area , largest exclusive economic zone , and third-largest population , exceeding 334 million. Its three largest metropolitan areas are New York , Los Angeles , and Chicago , and its three most populous states are California , Texas , and Florida . Paleo-Indians migrated across
17168-521: The number of Native Americans living in what is today the United States of America before the arrival of the European explorers and settlers has been the subject of much debate. While it is difficult to determine exactly how many Natives lived in North America before Columbus, estimates range from a low of 2.1 million ( Ubelaker 1976) to 7 million people (Russell Thornton) to a high of 18 million ( Dobyns 1983). A low estimate of around 1 million
17316-556: The oldest dated site in the Americas for such complex construction. It is nearly 2,000 years older than the Poverty Point site. Construction of the mounds went on for 500 years until was abandoned about 2800 BCE , probably due to changing environmental conditions. Poverty Point culture is a Late Archaic archaeological culture that inhabited the area of the lower Mississippi Valley and surrounding Gulf Coast. The culture thrived from 2200 BCE to 700 BCE , during
17464-408: The policy of redlining later adopted by the federal Home Owners' Loan Corporation . An explosion of technological advancement accompanied by the exploitation of cheap immigrant labor led to rapid economic expansion during the late 19th and early 20th centuries , allowing the United States to outpace the economies of England, France, and Germany combined. This fostered the amassing of power by
17612-574: The primary colonial grievances was a denial of their rights as Englishmen , particularly the right to representation in the British government that taxed them . To demonstrate their dissatisfaction and resolve, the First Continental Congress met in 1774 and passed the Continental Association , a colonial boycott of British goods that proved effective. The British attempt to then disarm the colonists resulted in
17760-585: The rapid declines of some populations and continuing rivalries among their nations, Native Americans sometimes re-organized to form new cultural groups, such as the Seminoles of Florida in the 19th century and the Mission Indians of Alta California . Some scholars characterize the treatment of Native Americans by the US as genocide or genocidal whilst others dispute this characterization. Estimating
17908-811: The result of arbitrary formulas selectively applied to numbers from unreliable historical sources. By 1800, the Native population of the present-day United States had declined to approximately 600,000, and only 250,000 Native Americans remained in the 1890s. Chickenpox and measles , endemic but rarely fatal among Europeans (long after being introduced from Asia ), often proved deadly to Native Americans. Smallpox epidemics often immediately followed European exploration and sometimes destroyed entire village populations. While precise figures are difficult to determine, some historians estimate that at least 30% (and sometimes 50% to 70%) of some Native populations died after first contact due to Eurasian smallpox. One element of
18056-515: The rights of African Americans . National infrastructure, including transcontinental telegraph and railroads , spurred growth in the American frontier . From 1865 through 1917 an unprecedented stream of immigrants arrived in the United States, including 24.4 million from Europe. Most came through the port of New York City , and New York City and other large cities on the East Coast became home to large Jewish , Irish , and Italian populations, while many Germans and Central Europeans moved to
18204-614: The rocky Great Basin and Chihuahua , Sonoran , and Mojave deserts. In the northwest corner of Arizona , carved by the Colorado River over millions of years, is the Grand Canyon , a steep-sided canyon and popular tourist destination known for its overwhelming visual size and intricate, colorful landscape. The Sierra Nevada and Cascade mountain ranges run close to the Pacific coast . The lowest and highest points in
18352-472: The site. Artifacts show the people traded with other Native Americans located from Georgia to the Great Lakes region. This is one among numerous mound sites of complex indigenous cultures throughout the Mississippi and Ohio valleys. They were one of several succeeding cultures often referred to as mound builders . The Oshara tradition people lived from 5500 BCE to 600 CE . They were part of
18500-573: The six service branches, which are made up of the U.S. Army , Marine Corps , Navy , Air Force , and Space Force . The Coast Guard is administered by the Department of Homeland Security in peacetime and can be transferred to the Department of the Navy in wartime. The United States spent $ 916 billion on its military in 2023, which is by far the largest amount of any country , making up 37% of global military spending and accounting for 3.4% of
18648-545: The sole authority of a state government. SDFs are authorized by state and federal law but are under the command of the state's governor . They are distinct from the state's National Guard units in that they cannot become federalized entities. A state's National Guard personnel, however, may be federalized under the National Defense Act Amendments of 1933 , which created the Guard and provides for
18796-543: The states are also represented by local elected governments , which are administrative divisions of the states. States are subdivided into counties or county equivalents , and further divided into municipalities . The District of Columbia is a federal district containing the U.S. capital, Washington, D.C. . The federal district is an administrative division of the federal government. Federally recognized tribes govern 326 Indian reservations . The United States has an established structure of foreign relations, and it has
18944-645: The strong, centralized European monarchies. After 1492, European exploration and colonization of the Americas revolutionized how the Old and New Worlds perceived themselves. One of the first major contacts, in what would be called the American Deep South , occurred when the conquistador Juan Ponce de León landed in La Florida in April 1513. He was later followed by other Spanish explorers, such as Pánfilo de Narváez in 1528 and Hernando de Soto in 1539. The subsequent European colonists in North America often rationalized their expansion of empire with
19092-510: The structure and responsibilities of the national federal government and its relationship with the individual states. The U.S. Constitution is the world's oldest national constitution still in effect (from March 4, 1789). Composed of three branches, all headquartered in Washington, D.C., the federal government is the national government of the United States. It is regulated by a strong system of checks and balances . The three-branch system
19240-478: The theory of Neolithic Revolution to sustain such large villages over long periods. Native American cultures are not included in characterizations of advanced Stone Age cultures as " Neolithic ," which is a category that more often includes only the cultures in Eurasia, Africa, and other regions. The prime example is Watson Brake in northern Louisiana, whose 11-mound complex is dated to 3500 BCE , making it
19388-611: The use of the animals, they began to change their cultures in substantial ways, especially by extending their nomadic ranges for hunting. The reintroduction of the horse to North America had a profound impact on Native American culture of the Great Plains . The tribes trained and used horses to ride and to carry packs or pull travois . The people fully incorporated the use of horses into their societies and expanded their territories. They used horses to carry goods for exchange with neighboring tribes, to hunt game , especially bison , and to conduct wars and horse raids. The 16th century saw
19536-468: The war, which makes it proportionately one of the bloodiest and costliest in the history of America. More than half of New England's 90 towns were assaulted by Native American warriors. One in ten soldiers on both sides were wounded or killed. The war is named after the main leader of the Native American side, Metacomet (also known as Metacom or Pometacom) who was known to the English as King Philip. He
19684-547: The waterways that served as their major transportation routes. The Hopewell exchange system traded materials from all over North America. The Coles Creek culture was an indigenous development of the Lower Mississippi Valley that took place between the late Woodland period and the later Plaquemine culture period. The period is marked by the increased use of flat-topped platform mounds arranged around central plazas, more complex political institutions, and
19832-406: The world's fourth-longest river system , runs predominantly north–south through the heart of the country. The flat and fertile prairie of the Great Plains stretches to the west, interrupted by a highland region in the southeast. The Rocky Mountains , west of the Great Plains, extend north to south across the country, peaking at over 14,000 feet (4,300 m) in Colorado . Farther west are
19980-449: The world's second-largest diplomatic corps as of 2024 . It is a permanent member of the United Nations Security Council , and home to the United Nations headquarters . The United States is a member of the G7 , G20 , and OECD intergovernmental organizations. Almost all countries have embassies and many have consulates (official representatives) in the country. Likewise, nearly all countries host formal diplomatic missions with
20128-444: The world's oldest surviving federation, and its presidential system of national government has been adopted, in whole or in part, by many newly independent states worldwide following their decolonization . It is a liberal representative democracy "in which majority rule is tempered by minority rights protected by law ". The Constitution of the United States serves as the country's supreme legal document , also establishing
20276-423: The world's tornadoes occur in the country , mainly in Tornado Alley . Overall, the United States receives more high-impact extreme weather incidents than any other country. Extreme weather became more frequent in the U.S. in the 21st century, with three times the number of reported heat waves as in the 1960s. In the American Southwest , droughts became more persistent and more severe. The regions considered as
20424-409: The world, with almost 2 million people incarcerated . An analysis of the World Health Organization Mortality Database from 2010 showed U.S. homicide rates "were 7 times higher than in other high-income countries, driven by a gun homicide rate that was 25 times higher". History of Native Americans in the United States The history of Native Americans in the United States began before
20572-458: Was annexed in 1845, and the 1846 Oregon Treaty led to U.S. control of the present-day American Northwest . Victory in the Mexican–American War resulted in the 1848 Mexican Cession of California, Nevada, Utah, and much of present-day Colorado and the American Southwest . The California gold rush of 1848–1849 spurred a huge migration of white settlers to the Pacific coast, leading to even more confrontations with Native populations. One of
20720-483: Was a Native American culture that existed from 1000 BCE to 200 BCE , in a time known as the Early Woodland period . The Adena culture refers to what was probably a number of related Native American societies sharing a burial complex and ceremonial system. The Hopewell tradition is the term for the common aspects of the Woodland period culture that flourished along rivers in the Eastern Woodlands from 200 BCE to 500 CE . The Hopewell tradition
20868-703: Was adopted on July 4, 1776. The political values of the American Revolution included liberty , inalienable individual rights ; and the sovereignty of the people ; supporting republicanism and rejecting monarchy , aristocracy , and all hereditary political power; civic virtue ; and vilification of political corruption . The Founding Fathers of the United States , who included Washington, Jefferson, John Adams , Benjamin Franklin , Alexander Hamilton , John Jay , James Madison , Thomas Paine , and many others, were inspired by Greco-Roman , Renaissance , and Enlightenment philosophies and ideas. The Articles of Confederation were ratified in 1781 and established
21016-837: Was centered along American Southwest . The early Hohokam founded a series of small villages along the middle Gila River . They raised corn, squash, and beans. The communities were near good arable land, with dry farming common in the earlier years of this period. They were known for their pottery, using the paddle-and-anvil technique. The Classical period of the culture saw the rise in architecture and ceramics. Buildings were grouped into walled compounds, as well as earthen platform mounds. Platform mounds were built along river as well as irrigation canal systems, suggesting these sites were administrative centers allocating water and coordinating canal labor. Polychrome pottery appeared, and inhumation burial replaced cremation. The trade included that of shells and other exotics. Social and climatic factors led to
21164-411: Was concentrated in a small area along the southern and central coast. The number of indigenes decreased more rapidly after California ceased to be a Spanish colony, especially during the second half of the 19th century and the beginning of the 20th (see chart on the right). Smallpox epidemics in 1780–1782 and 1837–1838 brought devastation and drastic depopulation among the Plains Indians . By 1832,
21312-404: Was elected the country's first president under the Constitution, and the Bill of Rights was adopted in 1791 to allay skeptics' concerns about the power of the more centralized government. His resignation as commander-in-chief after the Revolutionary War and his later refusal to run for a third term as the country's first president established a precedent for the supremacy of civil authority in
21460-478: Was first posited by the anthropologist James Mooney in the 1890s, by calculating the population density of each culture area based on its carrying capacity . In 1965, the American anthropologist Henry F. Dobyns published studies estimating the original population to have been 10 to 12 million. By 1983, he increased his estimates to 18 million. Historian David Henige criticized higher estimates such as those of Dobyns', writing that many population figures are
21608-428: Was not a single culture or society, but a widely dispersed set of related populations, who were connected by a common network of trade routes, known as the Hopewell Exchange System. At its greatest extent, the Hopewell exchange system ran from the Southeastern Woodlands into the northern shores of Lake Ontario . Within this area, societies participated in a high degree of exchange; most activities were conducted along
21756-441: Was only in America" that Europeans from 1500 to 1776 knew of societies that were "truly free." Natural freedom is the only object of the policy of the [Native Americans]; with this freedom do nature and climate rule alone amongst them ... [Native Americans] maintain their freedom and find abundant nourishment... [and are] people who live without laws, without police, without religion. In the 20th century, some writers have credited
21904-443: Was the last Massasoit (Great Leader) of the Pokanoket Tribe/Pokanoket Federation and Wampanoag Nation. Upon their loss to the Colonists, many managed to flee to the North to continue their fight against the British (Massachusetts Bay Colony) by joining with the Abenaki Tribes and Wabanaki Federation. Between 1754 and 1763, many Native American tribes were involved in the French and Indian War / Seven Years' War . Those involved in
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