What is the capital of the United States?

The capital of the United States is Washington, D.C. This city serves as the political center of the country, housing the federal government and key institutions, including the White House, the Capitol, and the Supreme Court. Established as the capital in 1800, Washington, D.C. was specifically chosen for its location along the Potomac River to balance the interests of different regions in the nation.

The significance of Washington, D.C. extends beyond just being the seat of government; it is also a symbol of American democracy and the rights of its citizens. Its design reflects the country's history and values, featuring numerous monuments and memorials that commemorate influential figures and events in U.S. history.

The other options presented do not serve as the capital. New York City and Los Angeles are major metropolitan areas known for their cultural and economic influence, while Chicago is renowned for its architecture and historical significance, but none of these cities function as the federal government's focal point.