Kammala wannan jumla: Muhimmancin Philadelphia da kuma tsakiyar wuri a cikin yankuna ya sanya shi cibiyar halitta ga masu juyin juya halin Amurka. A cikin 1750s, Philadelphia ta wuce Boston don zama birni mafi girma da tashar jiragen ruwa mafi girma a Biritaniya ta Amurka, kuma na biyu a cikin Daular Burtaniya bayan London. Birnin ya karbi bakuncin Majalisar Dattijai ta Farko (1774) kafin yakin juyin juya hali; da
Majalisa ta biyu na Continental (1775<unk>76), wanda ya sanya hannu kan Yarjejeniyar Independence na Amurka, a lokacin yakin; da kuma Yarjejeniyar Tsarin Mulki (1787) bayan yakin. An yi yaƙe-yaƙe da yawa a ciki da kusa da Philadelphia.