What is the capital of the United States?

Washington, D.C. is the capital of the United States because it was specifically established as the nation’s capital through the Residence Act in 1790. This city was chosen to be the capital to serve as a neutral ground for the new government. It is located on the Potomac River between Maryland and Virginia and is not part of any state, serving as a federal district. Washington, D.C. is the seat of the federal government, housing the three branches of government: the Executive (the White House), the Legislative (Capitol Building), and the Judicial (Supreme Court).

The other options are major American cities known for their economic, cultural, and historical significance but do not serve as the capital. New York City, for instance, was the first capital under the Constitution, but the government moved to Washington, D.C. in 1800. Los Angeles and Chicago are also prominent urban areas, yet they do not have the status of being the nation's capital. Understanding the significance of Washington, D.C. helps clarify its role in American governance and history.