Question

Lying between the states of pennsylvania and Maryland, which imaginary line divided the 'Slave States' from the 'Free States' in pre-Civil war America?

Answer 1

Mason and Dixon Line, also called Mason-Dixon Line, originally the boundary between Maryland and Pennsylvania in the United States. In the pre-Civil War period it was regarded, together with the Ohio River, as the dividing line between slave states south of it .

Answer 2

Hey mate !!! Answer :- Mason-Dixon Line, originally the boundary between Maryland and Pennsylvania in the United States.  Hope it helps :)