About Philadelphia

Philadelphia (ˌfɪləˈdɛlfiə) is the largest city in Pennsylvania and the sixth most populous city in the United States and seventh most densely populated city in the U.S. It is the county seat of Philadelphia County. It is colloquially referred to as "the City of Brotherly Love" (from Greek: Φιλαδέλφεια, [pʰi.la.ˈdel.pʰeː.a], Modern Greek: [fi.la'ðɛl.fi.a], "brotherly love" from philos "love" and adelphos "brother"). Residents often informally call the city "Philly." The city is recognized as a strong candidate global city with strong evidence of world city formation.

In 2005, the population of the city proper was estimated to be over 1.4 million, while the Delaware Valley metropolitan area, with a population of 5.8 million, was the fifth-largest in the United States and the 45 largest city in the world. A commercial, educational, and cultural center, the city was once the second-largest in the British Empire, (after London) and the social and geographical center of the original 13 American colonies.
During the 18th century, it eclipsed New York City in political and social importance, with Benjamin Franklin taking a large role in Philadelphia's early rise to prominence. It was in this city that some of the ideas, and subsequent actions, gave birth to the American Revolution and American independence, making Philadelphia a centerpiece of early American history. It was the most populous city of the young United States and served as the the nation's first capital in the 1790s.