How the Mason-Dixon Line Became the Divider Between the North and the South
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US Geography: What is the Mason-Dixon line? - Quora
Historical Events, HowStuffWorks
What Was the Mason-Dixon Line?
Mason–Dixon line - Wikipedia
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How the Mason-Dixon Line Became the Divider Between the North and the South
What states are in the mid- Atlantic region? Pennsylvania doesn't even touch the Atlantic. Always thought it was Md, De and va as mid Atlantic as they are the most northern states
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