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 and was specifically chosen for its location between the northern and southern states, which was intended to promote unity among the different regions. Washington, D.C. houses the federal government, including the executive branch (the President's residence and offices), the legislative branch (the U.S. Congress), and the judicial branch (the Supreme Court).

The other cities listed—New York, Los Angeles, and Chicago—are significant urban centers in the United States but do not serve as the capital. Historically, New York City was the first capital under the Constitution before it was moved to Philadelphia and then to Washington, D.C. Therefore, the choice of Washington, D.C. as the capital reflects the city's unique status and role in the governance of the United States.