History of Philadelphia

ing that Philadelphia would become more like an English rural town instead of a city, Penn laid out roads on a grid plan to keep houses and businesses spread far apart, with areas for gardens and orchards. The city's inhabitants did not follow Penn's plans, as they crowded by the Delaware River, the port, and subdivided and resold their lots. Before Penn left Philadelphia for the last time, he issued the Charter of 1701 establishing it as a city. It became an important trading center, poor at first, but with tolerable living conditions by the 1750s. Benjamin Franklin, a leading citizen, helped improve city services and founded new ones, such as fire protection, a library, and one of the American colonies' first hospitals.

A number of important philosophical societies were formed, which were centers of the city's intellectual life: the Philadelphia Society for Promoting Agriculture (1785), the Pennsylvania Society for the Encouragement of Manufactures and the Useful Arts (1787), the Academy of Natural Sciences (1812), and the Franklin Institute (1824). These worked to develop and finance new industries and attract skilled and knowledgeable immigrants from Europe.

Philadelphia's importance and central location in the colonies made it a natural center for America's revolutionaries. The city hosted the First Continental Congress before the war; the Second Continental Congress, which signed the United States Declaration of Independence, during the war; and the Constitutional Convention (1787) after the war. Several battles were fought in and near Philadelphia as well.

Philadelphia served as the temporary capital of the United States, 1790–1800, while the Federal City was under construction in the District of Columbia. In 1793, the largest yellow fever epidemics in U.S. history killed at