New York City
In 1785, the assembly of the Congress of the Confederation made New York the national capital shortly after the war. New York was the last capital of the U.S. under the Articles of Confederation and the first capital under the Constitution of the United States. In 1789, the first President of the United States, George Washington, was inaugurated; the first United States Congress and the Supreme Court of the United States each assembled for the first time, and the United States Bill of Rights was drafted, all at Federal Hall on Wall Street. By 1790, New York had surpassed Philadelphia as the largest city in the United States.

Q: In what building did the Supreme Court of the United States first sit?
Federal Hall