Description : Washington, D.C., formally the District of Columbia and also known as D.C. or Washington, is the capital city of the United States of America. It is located on the Potomac River bordering Maryland and Virginia, with Congress holding its first session there in 1800. The city was named for George Washington, the first president of the United States and a Founding Father, and the federal district is named after Columbia, a female personification of the nation. As the seat of the U.S. federal government and several international organizations, the city is an important world political capital. It is one of the most visited cities in the U.S., with over 20 million visitors in 2016. The U.S. Constitution provided for a federal district under the exclusive jurisdiction of U.S. Congress; the district is therefore not a part of any U.S. state. The signing of the Residence Act on July 16, 1790, approved the creation of a capital district located along the Potomac River near the country's East Coast. The City of Washington was founded in 1791 to serve as the national capital. In 1801, the land, formerly part of Maryland and Virginia (including the settlements of Georgetown and Alexandria), officially became recognized as the federal district. In 1846, Congress returned the land originally ceded by Virginia, including the city of Alexandria; in 1871, it created a single municipal government for the remaining portion of the district. Various tribes of the Algonquian-speaking Piscataway people (also known as the Conoy) inhabited the lands around the Potomac River when Europeans first visited the area in the early 17th century. One group known as the Nacotchtank (also called the Nacostines by Catholic missionaries) maintained settlements around the Anacostia River within the present-day District of Columbia. Conflicts with European colonists and neighboring tribes forced the relocation of the Piscataway people, some of whom established a new settlement in 1699 near Point of Rocks, Maryland. In his Federalist No. 43, published January 23, 1788, James Madison argued that the new federal government would need authority over a national capital to provide for its own maintenance and safety. Five years earlier, a band of unpaid soldiers had besieged Congress while its members were meeting in Philadelphia. Known as the Pennsylvania Mutiny of 1783, the event emphasized the need for the national government not to rely on any state for its own security. Article One, Section Eight, of the Constitution permits the establishment of a "District (not exceeding ten miles square) as may, by cession of particular states, and the acceptance of Congress, become the seat of the government of the United States". However, the Constitution does not specify a location for the capital. In what is now known as the Compromise of 1790, Madison, Alexander Hamilton, and Thomas Jefferson came to an agreement that the federal government would pay each state's remaining Revolutionary War debts in exchange for establishing the new national capital in the Southern United States. Foundation On July 9, 1790, Congress passed the Residence Act, which approved the creation of a national capital on the Potomac River. The exact location was to be selected by President George Washington, who signed the bill into law on July 16. Formed from land donated by the states of Maryland and Virginia, the initial shape of the federal district was a square measuring 10 miles (16 km) on each side, totaling 100 square miles (259 km2). Two pre-existing settlements were included in the territory: the port of Georgetown, Maryland, founded in 1751, and the city of Alexandria, Virginia, founded in 1749. During 1791–92, a team under Andrew Ellicott, including Ellicott's brothers Joseph and Benjamin and African-American astronomer Benjamin Banneker, surveyed the borders of the federal district and placed boundary stones at every mile point. Many of the stones are still standing. A new federal city was then constructed on the north bank of the Potomac, to the east of Georgetown. On September 9, 1791, the three commissioners overseeing the capital's construction named the city in honor of President Washington. The same day, the federal district was named Columbia (a feminine form of "Columbus"), which was a poetic name for the United States commonly in use at that time. Congress held its first session there on November 17, 1800. Congress passed the District of Columbia Organic Act of 1801 which officially organized the district and placed the entire territory under the exclusive control of the federal government. Further, the unincorporated area within the district was organized into two counties: the County of Washington to the east of the Potomac and the County of Alexandria to the west. After the passage of this Act, citizens living in the district were no longer considered residents of Maryland or Virginia, which therefore ended their representation in Congress.
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