What is the capital of the United States?

The capital of the United States is Washington, D.C. This city was established as the nation’s capital in 1790, primarily to serve as a neutral ground for the federal government, located between the northern and southern states. The choice of Washington, D.C., as the capital reflects its significant political role and historical importance, being the site of the nation's federal government institutions, including the White House, Congress, and the Supreme Court.

New York City, Los Angeles, and Chicago, while being major cities with their own unique cultural and economic significance, do not serve as the capital of the United States. New York City was the first capital under the Constitution, but it was moved to Washington, D.C., to establish a more central location for governance.