What is the capital of the United States?

Washington, D.C. is the capital of the United States. This city was established as the national capital in 1790 and serves as the seat of the federal government. It was specifically chosen because of its central location along the Potomac River, which allowed for easier access from both the northern and southern states. Washington, D.C. is home to important government buildings such as the White House, the Capitol Building, and the Supreme Court, which all play critical roles in the country’s legislative, executive, and judicial branches.

The other options, while historically significant cities, do not serve as the capital of the United States. New York City and Philadelphia were both former capitals before the establishment of Washington, D.C., with each city serving briefly during the early years of the nation. Los Angeles, on the other hand, is not historically associated with the U.S. government and primarily serves as a cultural and economic center.