What's the capital of washington dc.

The District of Columbia

Explanation:Congress declared the city of Washington in the District of Columbia, the permanent capital of the United States.

Became the capital. where are white house. the Capitol and the Washington Monument? Just where they should be--in the capital of the United States. On July 16, 1790, Congress declared the city of Washington in the District of Columbia, the permanent capital

Explanation:

Washington, D.C. (also known as simply Washington or D.C. and officially as the District of Columbia) is the capital of the United States. It is neither a state nor a city. It is a territory.

dude you should crop your image so only the question shows. but   can you explain it better