HISTORY · HISTORICAL MARKER

40th Parallel

History
1
Maryland's charter, granted in 1632, included old Philadelphia because it made the 40th parallel, which crosses the river near this point, the colony's northern boundary. This charter conflicted with the charter given William Penn in 1681. After more than eighty years of legal disputes, a survey in 1763-67 fixed the boundary at the 39-43' parallel. This boundary acquired national fame as the Mason and Dixon line.
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Washington Boro, Pennsylvania · United States
Washington Boro, Pennsylvania
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