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History of United States of America
From antiquity to the modern era — the historical eras, key events, and narrative that shaped United States of America.
Overview
The Adenans appear to have been absorbed or displaced by various groups collectively known as Hopewellians. One of the most important centers of their culture was found in southern Ohio, where the remains of several thousand of these mounds still remain. Believed to be great traders, the Hopewellians used and exchanged tools and materials across a wide region of hundreds of kilometers.
Historical Eras
The major periods of {country}’s history at a glance.
Pre-Colonial Era
600 BCE – 1607
Indigenous peoples including the Adenans and Hopewellians built complex civilizations across North America long before European contact. Christopher Columbus's 1492 voyage initiated sustained European awareness of the continent. Spanish, French, and English explorers subsequently mapped and contested the territory, setting the stage for permanent colonial settlement.
Colonial Period
1607 – 1776
England established its first permanent American settlement at Jamestown, Virginia in 1607, followed by the Pilgrim Fathers' Plymouth Colony in 1620. Thirteen distinct colonies grew along the Atlantic seaboard, developing trade economies and nascent self-governing assemblies. Mounting tensions over British taxation without colonial representation — culminating in the Boston Massacre and Boston Tea Party — ignited revolutionary sentiment.
Founding & Early Republic
1776 – 1820
The Declaration of Independence in 1776 formally severed ties with Britain, and the Treaty of Paris (1783) secured international recognition of the new nation. George Washington became the first president in 1789, and the Bill of Rights enshrined individual liberties in 1791. The Louisiana Purchase (1803) and Lewis and Clark's western expedition dramatically expanded the young republic's territorial ambitions.
Expansion & Civil War
1820 – 1865
Westward expansion under the banner of Manifest Destiny added vast territories but intensified conflicts over slavery's extension into new states. The election of Abraham Lincoln in 1860 triggered Southern secession and the catastrophic Civil War (1861–1865), the nation's deadliest conflict. The Union's victory preserved the federal government and led to the abolition of slavery through the Thirteenth Amendment.
Reconstruction to World Power
1865 – 1945
Post-war Reconstruction reshaped the South while rapid industrialization transformed the broader national economy, drawing millions of immigrants and fueling the rise of major cities. The United States emerged as a global force through victories in the Spanish-American War, World War I, and despite the severe setback of the Great Depression of the 1930s, ultimately World War II. These decades established American industrial, military, and diplomatic preeminence on the world stage.
Superpower & Modern Era
1945 – present
Victory in World War II positioned the United States as a dominant superpower, leading to decades of Cold War rivalry with the Soviet Union that shaped global politics until 1991. Domestically, the Civil Rights Movement dismantled institutionalized segregation, while technological innovation drove sustained economic growth. The United States remains the world's foremost military and economic power, navigating challenges of terrorism, political polarization, and rapid technological change.
Timeline Preview
The first 7 key events. View the full chronology on the timeline page.
1492
Christopher Columbus discovers America.
Christopher Columbus discovers America.
1607
Jamestown, the first permanent English settlement in America, is established.
Jamestown, the first permanent English settlement in America, is established by the London Company in southeast Virginia.
1620
Plymouth Colony, near Cape Cod, is founded by the Pilgrim Fathers.
Plymouth Colony, near Cape Cod, is founded by the Pilgrim Fathers, whose example is followed by other English Puritans in New England.
1754 – 1763
French and Indian War.
French and Indian War.
1765 – 1773
The British Parliament bypasses colonial assemblies and imposes taxes.
The British Parliament bypasses colonial assemblies and imposes several internal and external taxes on the outraged colonists.
1770
Boston Massacre.
Boston Massacre. British troops fire into a mob, killing five men and leading to intense public protests.
1773
The colonial response to taxation without representation culminates in the Boston Tea Party.
The colonial response to taxation without representation culminates in the Boston Tea Party. The Sons of Liberty dump 342 chests of tea into Boston harbor.