Respuesta :

Washington has been the federal capital of the United States since 1800. Each U.S. state has its own capital city, as do many of its insular areas.
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ANSWER: The capital city of the United States is: Washington, D.C.

EXPLANATION: Washington D.C is a city which borders 2 states and contains the 3 federal government branches, The White House, the Capitol, and the Supreme Court.