Pennsylvania

+Pennsylvania, often called the Keystone State, is a rich tapestry of American history and diverse landscapes. From the bustling streets of [Philadelphia](/wiki/philadelphia) to the serene [Appalachian Mountains](/wiki/appalachian_mountains), it encompasses both urban vibrancy and natural beauty. A foundational state, it played a critical role in the formation of the United States.

+## See also

+- [US History](/wiki/us_history)

+- [East Coast](/wiki/east_coast)

+- [Thirteen Colonies](/wiki/thirteen_coloniess)