Philadelphia

Philadelphia ( /ˌfɪləˈdɛlfiə/) is the largest city in the Commonwealth of Pennsylvania and the fifth-most-populous city in the United States. It is located in the Northeastern United States along the Delaware and Schuylkill rivers, and it is the only consolidated city-county in Pennsylvania. As of the 2010 Census, the city had a population of 1,526,006. Philadelphia is the economic and cultural center of the Delaware Valley, home to 6 million people and the country's fifth-largest metropolitan area. Popular nicknames for Philadelphia are Philly and The City of Brotherly Love, the latter of which comes from the literal meaning of the city's name in Greek (Greek: Φιλαδέλφεια , Modern Greek:) "brotherly love", compounded from philos (φίλος) "loving", and adelphos (ἀδελφός) "brother").

In 1682, William Penn founded the city to serve as capital of Pennsylvania Colony. By the 1750s it was the largest city and busiest port in British America. During the American Revolution, Philadelphia played an instrumental role as a meeting place for the Founding Fathers of the United States, who signed the Declaration of Independence in 1776 and the Constitution in 1787. Philadelphia was one of the nation's capitals during the Revolutionary War, and the city served as the temporary U.S. capital while Washington, D.C. was under construction. During the 19th century, Philadelphia became a major industrial center and railroad hub that grew from an influx of European immigrants. It became a prime destination for African Americans during the Great Migration and surpassed two million occupants by 1950.