What is the capital of the United States?

The capital of the United States is Washington, D.C. This city has served as the nation's capital since the late 18th century, specifically established in 1790 as a compromise between rival factions in various states, specifically between Northern and Southern states. It was chosen for its location along the Potomac River, which provided a neutral ground between the Northern and Southern states, with the intention of facilitating government operations.

Washington, D.C. is the seat of the federal government and houses the three branches: the Executive (the White House), the Legislative (the Capitol Building), and the Judicial (the Supreme Court). It also hosts countless national monuments and museums, making it a symbolic center for American democracy and governance.

Other cities, such as New York City, Los Angeles, and Chicago, are all significant urban centers in the United States, each with their own cultural and economic relevance. However, none of these cities serve as the capital, which is specifically designated as Washington, D.C. Thus, the selection of Washington, D.C. as the capital is rooted in its historical significance and its established role in hosting the federal government's functions.