Mason-Dixon Line

geographical name
Ma·​son-Dix·​on Line | \ ˈmā-sᵊn-ˈdik-sən How to pronounce Mason-Dixon Line (audio) \

Definition of Mason-Dixon Line

the boundary line from the southwest corner of Delaware north to Pennsylvania and west to approximately the southwest corner of Pennsylvania often considered the boundary between the northern and southern states of the U.S.

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