Rubuta ci gaba don wannan sakin layi - 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 dauki bakuncin Babban Taron Continental na farko (1774) kafin yakin neman 'yanci; Babban Taron Continental na biyu
(1775<unk>76), wanda ya rattaba 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.