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The Health of the Commonwealth: A Brief History of Medicine, Public Health, and Disease in Pennsylvania (2020) online review Higgins, James E. "Keystone of an epidemic: Pennsylvania's urban experience during the 1918–1920 influenza epidemic" (PhD Dissertation, Lehigh University; ProQuest Dissertations & Theses, 2009. 3354767) Covers the major ...
Map of the United States with Pennsylvania highlighted. There are 56 municipalities classified as cities in the U.S. state of Pennsylvania. [1] Each city is further classified based on population, with Philadelphia being of the first class, Pittsburgh of the second class, Scranton of the second class A, and the remaining 53 cities being of the third class.
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Pennsylvania is a state located in the Northeastern United States. As of the 2020 U.S. census, Pennsylvania is the fifth-most populous state with 13,002,700 inhabitants [1] and the 32nd-largest by land area spanning 44,742.70 square miles (115,883.1 km 2) of land. [2] Pennsylvania is divided into 67 counties and contains 2,560 municipalities.
Pennsylvania's history of human habitation extends thousands of years before the foundation of the colonial Province of Pennsylvania in 1681. Archaeologists believe the first settlement of the Americas occurred at least 15,000 years ago, during the Last Glacial Period, though it is unclear when humans first inhabited present-day Pennsylvania.
Ancient cities allowed for the pooling of resources, exchange of ideas, large marketplaces, and even some shared amenities such as drinking water, sewerage, law enforcement, and roads. The first cities formed and grew once these benefits of proximity between people exceeded the cost of work required to maintain a settlement. [1]
The General Assembly of Pennsylvania commissioned the surveying of land near Presque Isle through an act passed on 18 April 1795. Andrew Ellicott, who famously completed Pierre Charles L'Enfant's survey of Washington, D.C., and helped resolve the boundary between Pennsylvania and New York, arrived to begin the survey in June 1795. Initial ...
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