32+ Mason Dixon Line Missouri Compromise Pictures. As part of the missouri compromise that sought to even out the number of slave states and free states, maryland was relegated to the south. The line was surveyed by charles mason in collaboration with jeremiah dixon the term was sometimes used in the decades after the survey, but it was not until the missouri compromise included the mason and dixon line.
The first dispute was between.
It was used to reference the boundary between states where slavery was legal and states. On october 18, 1767, the mason dixon line, the boundary between maryland and pennsylvania, was agreed upon. Mason and dixon line, in america, the boundary line (lat. Popularly the line separating free states and slave states before the civil war.