heili t1_izeol1s wrote
Reply to comment by Mor_Tearach in Fellow Pennsylvanians, we must join our neighbors from r/Maryland to defend our territory from the Delawarean scourge! by MPA_Dad
Parts of it were Virginia until an agreement in 1779 that extended the Mason-Dixon line to a fixed point 5 degrees west of the Delaware River and drew Pennsylvania's western border as a true north-south straight line rather than a tracing of the course of the Delaware. This was done to compensate Pennsylvania for territory that it ceded between the Mason-Dixon line and the 39th parallel.
Mor_Tearach t1_izgv0zg wrote
Thank you! I could ( and should ) have looked it up, very good to hear the right history.
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