Philadelphia

Philadelphia, colloquially referred to as Philly, is the most populous city in the U.S. state of Pennsylvania[11] and the sixth-most populous city in the United States, with a population of 1,603,797 in the 2020 census. The city is the urban core of the larger Delaware Valley, also known as the Philadelphia metropolitan area, the eighth-largest metropolitan region in the nation with 6.245 million residents in its metropolitan statistical area, and 7.366 million residents in its combined statistical area.[12] Philadelphia has played an extensive role in United States history. The city was founded in 1682 by William Penn, an English Quaker and advocate of religious freedom. The city served as the capital of the Pennsylvania Colony during the British colonial era[3][13] and went on to play a historic and vital role as the central meeting place for the nation's founding fathers during the American Revolution and subsequent Revolutionary War. Philadelphia hosted the First Continental Congress in 1774, preserved the Liberty Bell, and hosted the Second Continental Congress during which the nation's 56 founders formed the Continental Army and elected George Washington as its commander in 1775, and unanimously adopted the Declaration of Independence on July 4, 1776. For nine months, from September 1777 to June 1778, the city fell under British occupation during the war's Philadelphia campaign.[14] In 1787, the U.S. Constitution was ratified in Philadelphia at the Philadelphia Convention. Philadelphia remained the nation's largest city until 1790, and it served as the nation's first capital from May 10, 1775, until December 12, 1776, and on four subsequent occasions until 1800, when construction of the new national capital in Washington, D.C. was completed.[15]