On this day, May 25, back in 1738, the American colonies were not fighting Britain. They were nearly fighting each other.

In this episode of Dave Does History, we dig into the wild and often overlooked border war between Pennsylvania and Maryland—Cresap’s War.

Fueled by bad maps, stubborn governors, and one fiery frontiersman named Thomas Cresap, the feud saw barns torched, settlers evicted, and muskets drawn. It took King George II to finally end it.

Join us as we unravel the chaos that gave birth to the Mason-Dixon Line and ask what it really means to draw the line.