What's the name of the demarcation line in the United States that used to divide the North from the South in the 1700s?

The famed Mason-Dixon was a demarcation line that separated the United States of America along the states of Pennsylvania, Maryland, Delaware and West Virginia. Historically, it became associated with being the dividing line between the North and South U.S. It was surveyed by Charles Mason and Jeremiah Dixon in an attempt to resolve a boundary dispute in Colonial America.

Asked by Vasilii Kulev · Last updated 4 years ago · 1.7M views · SOURCE