What is the capital of the United States?

The capital of the United States is Washington, D.C. Located on the east coast of the country, it is a federal district that is not part of any state. Washington, D.C. is home to the three branches of the U.S. government: the executive (White House), the legislative (U.S. Capitol), and the judicial (Supreme Court). The city also contains many national monuments, museums, and government buildings, including the Lincoln Memorial and the Washington Monument. Washington, D.C. plays a central role in both U.S. politics and international diplomacy.