Mason-Dixon Line

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Mason-Dixon Line,

boundary between Pennsylvania and Maryland (running between lat. 39°43'26.3"N and lat. 39°43'17.6"N), surveyed by the English team of Charles Mason, a mathematician and astronomer, and Jeremiah Dixon, a mathematician and land surveyor, between 1763 and 1767. The ambiguous description of the boundaries in the Maryland and Pennsylvania charters led to a protracted disagreement between the proprietors of the two colonies, the Penns of Pennsylvania and the Calverts of Maryland. The dispute was submitted to the English court of chancery in 1735. A compromise between two families in 1760 resulted in the appointment of Mason and Dixon. By 1767 the surveyors had run their line 244 mi (393 km) west from the Delaware border, every fifth milestone bearing the Penn and Calvert arms. The survey was completed to the western limit of Maryland in 1773; in 1779 the line was extended to mark the southern boundary of Pennsylvania with Virginia (present-day West Virginia). Before the Civil War the term "Mason-Dixon Line" popularly designated the boundary dividing the slave states from the free states, and it is still used to distinguish the South from the North.


See study by E. Danson (2001).

Mason-Dixon Line

boundary between Pennsylvania and Mary-land that came to divide the slave (southern) states from the free (northern) states. [Am. Hist.: NCE, 1714]
References in periodicals archive ?
Due to the civil war, the Mason Dixon Line became an emotional freedom border.
It is another feather in the cap of the whole nation, not just that part below the mythical Mason Dixon line that some believes exists.
Food Network personalities like Paula Deen and shows such as Bravo's "Top Chef" have headlined an explosion in the popularity of cooking shows on television in recent years - and are a big part of the reason that mainstream audiences across the country have come to find out what hip foodies and southerners themselves have known for years - that the culture and food below the Mason Dixon Line leaves most folks, well .