When did the District of Columbia become a state?
It is a federal district of the eastern United States on the Potomac River between Virginia and Maryland. Coextensive with the city of Washington, it was established by congressional acts of 1790 and 1791 on a site selected by George Washington. Article One of the constitution allowed for a federal district for the federal government to be based in so that no state would have an unfair advantage over the other because it housed the federal government.