In the pre-independence era, Philadelphia was well developed in education. Arts, science, industry and commerce. From 1781 to 1783, the city was the capital of US under Articles of Confederation From 1790 to1800 it was the nation's capital. It has lot of industries for the manufacture of drugs, medical equipments, transportation equipments, etc. If the used car has automatic transmissions, it should engage immediately and , while driving, shifts should be quick, crisp and firm. No grinding noise or clunks should be heard. Any Credit Ok!