America

The United States arose from thirteen British colonies on North America's Atlantic coast. In 1337 the future colonies had not been founded and the region was inhabited by Indigenous peoples.

Fighting began at Lexington and Concord in 1775, and the Continental Congress declared independence in 1776. George Washington's army defeated Britain with French help; the Constitution established a federal republic in 1789. In 1803 the United States bought Louisiana from Napoleon, and in 1812 it went to war with Britain over disputes including British support for Tecumseh's confederacy.