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Mason and Dixon's Line



Mason and Dixon's Line, Mason-Dixon Line, traditional dividing line between the northern and southern states of the United States. Surveyed by Charles Mason and Jeremiah Dixon in 1767, the line formed the east-west boundary between Pennsylvania and Maryland and the north-south boundary between Maryland and Delaware. In 1779 the east-west line was extended to form the boundary between Virginia and Pennsylvania.



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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Manuelito to Medical Association, American