United States: History

Prior to European contact, the territory now comprising the United States was home to a vast diversity of indigenous nations with distinct languages, governance systems, and cultures, from the Iroquois Confederacy in the northeast to the Pueblo peoples of the Southwest. European colonization began in earnest in the early seventeenth century, with Spanish, French, Dutch, and English settlements establishing footholds along the coasts, and thirteen British colonies eventually forming the core of what would become the United States.

Colonial grievances over taxation and governance led to the American Revolutionary War, and the thirteen colonies declared independence from Britain on July 4, 1776, formally securing it through the Treaty of Paris in 1783. The new nation adopted the United States Constitution in 1788, establishing a federal republic, though the country's early history was marked by westward territorial expansion, the forced displacement of indigenous peoples, and the entrenchment of slavery, which ultimately precipitated the Civil War of 1861 to 1865 and the abolition of slavery through the Thirteenth Amendment.

The twentieth century saw the United States emerge as a global economic and military power, playing decisive roles in both World Wars and the Cold War, while also undergoing significant social transformation through the civil rights movement and expanding suffrage and civil liberties. Today, the United States remains the world's largest economy and a major center of technological, cultural, and political influence, while continuing to navigate ongoing debates over immigration, inequality, and its role in global affairs.