Mason-Dixon Line...

[WILMASBOYL78]

I'm sure all you southern boys know this...and now this Yankee does too.


This Day in History: Mason-Dixon Line Established

On October 18, 1767, Charles Mason and Jeremiah Dixon completed their survey which established the boundary between the colonies of Pennsylvania and Maryland.

The Mason-Dixon line was established in response to an order issued by the British crown in 1760 to settle border violence between the colonies' settlers. This boundary, at 39 degrees and 43 minutes north latitude, later became the line along which states divided into the Union and Confederacy in the Civil War.