when did washington dc become the us capital
Washington, D.C. The signing of the Residence Act on July 16, 1790, approved the creation of a capital district located along the Potomac River on the country's East Coast. The U.S. Constitution provided for a federal district under the exclusive jurisdiction of the Congress and the District is therefore not a part of any state. The states of Maryland and Virginia each donated land to form the federal district, which included the pre-existing settlements of Georgetown and Alexandria. Named in honor of President George Washington, the City of Washington was founded in 1791 to serve as the new national capital. In 1846, Congress returned the land originally ceded by Virginia; in 1871, it created a single municipal government for the remaining portion of the District.
Streets and highways of Washington, D.C. The District of Columbia was created to serve as the permanent national capital in 1790. Within the District, a new capital city was founded in 1791 to the east of a preexisting settlement at Georgetown. The original street layout in the new City of Washington was designed by Pierre (Peter) Charles L'Enfant.[2][3]