What is the capital of the United States?

The capital of the United States is Washington D.C. This city was established as the capital in 1790 and serves as the seat of the federal government. It houses critical national institutions, including the White House, the U.S. Capitol, and the Supreme Court. Washington D.C.'s unique status as a federal district, not part of any state, was created to provide a neutral ground for the nation's government. The city's location along the Potomac River was strategically chosen for its political significance and accessibility. Other cities mentioned, like New York City and Los Angeles, are major urban centers but do not serve as the political center of the country. Chicago, while an important city in the United States, is also not the capital.