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THE GEOGRAPHY OF THE CRUSADE.
It was a mere accident that the line drawn by Mason and Dixon between Pennsylvania and Maryland became known in later years as the dividing line between slavery and freedom.

The six States south of that line ultimately neglected or refused to abolish slavery, while the seven Northern States became free.

Vermont became a State in 1791 and Kentucky in 1792.

The third State to be added to the original thirteen was Tennessee in 1796.