Pennsylvania, often abbreviated as PA, is a state located in the northeastern United States. Known as the "Keystone State" due to its central role in the nation's early development, Pennsylvania boasts a rich history, playing a significant part in the American Revolution and the drafting of the Declaration of Independence and the U.S. Constitution, both of which took place in Philadelphia. The state is geographically diverse, featuring rolling farmlands, dense forests, and mountainous regions, supporting a variety of industries including agriculture, manufacturing, and tourism.
