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Mason-Dixon Line
Ma·son-Dix·on Line [ màyss'n díks'n ln ] line between free and slave states: the boundary that separates Pennsylvania from Maryland and West Virginia, regarded as the dividing line between free and slave states before the Civil War
[After Charles Mason and Jeremiah Dixon, 18th century surveyors]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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