The Pennsylvania Business Directory
Pennsylvania is often referred to as "PA", is located in the northeastern part of the United States. Pennsylvania is known as the keystone state, this is for a couple of reasons. This is partially because of its orignal location among the original 13 colonies. It is also a "Keystone State" because of the numerous important national documents that have been signed within Pennsylvania. Pennsylvania boasts the major cities of Pittsburg and Philadelphia. Other major cities include: Scranton, Allentown, and Harrisburg.
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