Pennsylvania United States North America
This subcategory is devoted to Pennsylvania, the Keystone State, so-called due to its strategic position on the Eastern seaboard and its prominent role in the economic, political, and military history of the United States. Pennsylvania was also the site of the Battle of Gettysburg, considered the turning point in the American Civil War, and the burgeoning steel industry-- and the labor movement that accompanied the development of manufacturing.
Top: Regional: North America: United States: Pennsylvania
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