At the edge of the Arctic Ocean, North America opens in ice and distance, a continent bordered by the Atlantic to the east, the Pacific to the south and west, and the Caribbean Sea to the southeast. By 2021 it held more than 592 million people across 23 independent states and territories, spread over about 24,709,000 square kilometres. It is the third-largest continent by area, and the fourth-largest by population, but its true story is not size alone. It is the meeting place of Canada, Greenland, the continental United States, Mexico, Central America, and the Caribbean, stitched together by trade, migration, and old shorelines.

No one can name the first people who reached it with certainty, only that humans lived in the Americas at least 20,000 years ago. The old trail runs back to the Bering Land Bridge between eastern Siberia and present-day Alaska, and perhaps by sea from Beringia about 13,000 years ago. The Clovis culture, in modern New Mexico, appears around 9550 to 9050 BCE, and later the Mississippian and Pueblo cultures shaped the Mississippi valley and the Four Corners. In the south, people domesticated maize, squash, tomatoes, and other crops that would travel far beyond the continent.

By around 1000 CE, Norse sailors had crossed into the north Atlantic world of Vinland, and at L'Anse aux Meadows in Newfoundland there is unmistakable evidence of settlement. Leif Erikson is thought to have visited, becoming the first European to make landfall on the continent, excluding Greenland. Yet the larger turning point came in 1492, when Christopher Columbus set off a transatlantic exchange that would change every coast. Amerigo Vespucci explored South America between 1497 and 1502, and German cartographers Martin Waldseemüller and Matthias Ringmann later gave his name to the Americas.

Waldseemüller put America on a 1507 map, and Gerardus Mercator used the term again in 1538 and 1569, when he wrote America sive India Nova. On the ground, conquest moved faster than names. Juan Ponce de León named La Florida in 1513, Hernán Cortés sailed to Mexico in 1519, and with Indigenous allies he conquered the Aztec Empire in 1521. Spain built permanent settlements in the Caribbean in the 1490s, then in Mexico and Central America, while disease and forced labour devastated Indigenous communities. France, England, the Dutch, and Danes soon pressed in, turning the continent into a contest of empires.

English settlement took firmer shape at Jamestown, Virginia, in 1607, and French settlement at Quebec City in 1608. Britain’s victory in the Seven Years’ War in 1763 pushed France out of most territory east of the Mississippi River, and the Mississippi itself became a frontier line. Then came the American Revolution. On 4 July 1776, in Philadelphia, the Second Continental Congress adopted the Declaration of Independence, written mainly by Thomas Jefferson, and George Washington became commander of the Continental Army. After eight years of war, the Treaty of Paris on 3 September 1783 confirmed the new United States.