Philadelphia

Philadelphia () is the largest city in Pennsylvania and the List of United States cities by population city in the United States.

In 2008, the population of the city proper was estimated to be over 1.4 million,http://www.census.gov/popest/cities/files/SUB-EST2005-all.csv Retrieved on October 8, 2006. while the metropolitan area's population of 5.8 million made it the country's fifth-largest. The city is the nation's fourth-largest urban area by population and its fourth-largest consumer media market as ranked by the Nielsen Media Research. It is the county seat of Philadelphia County, Pennsylvania (with which it is coterminous). Popular nicknames for Philadelphia include Philly and The City of Brotherly Love, from , , Modern Greek: , "brotherly love" from φίλος, (philos, love), and αδελφός (adelphos, brother).

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 13 Colonies.
Ben Franklin took a large role in Philadelphia's early rise to prominence. It was in this city that many of the ideas, and subsequent actions, gave birth to the American Revolution and United States Declaration of Independence, making Philadelphia a centerpiece of early American history. It was the most populous city of the young United States, and served as one of the nation's List of capitals in the United States during the Revolutionary War and after. Following the ratification of the U.S. Constitution, it was the temporary national capital from 1790 to 1800 while Washington, DC was under construction.
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Soure: Wikipedia.org