On this episode of Our American Stories, long before the Mason-Dixon Line came to represent a nation divided, it began as a simple question of property. In the 1760s, Pennsylvania and Maryland bitterly disputed over their shared border. To end it, two English surveyors, Charles Mason and Jeremiah Dixon, were sent across the Atlantic with a task that would test their patience and skill.

They spent years in the wilderness, charting forests and rivers, measuring each step with chains and stars. The line they drew finally brought peace to the colonies. But history had other plans. Nearly a century later, their boundary became a symbol of division between free and slave states.

Dakota Bricker tells the story of how a quiet act of measurement became a defining landmark in American history, one that still carries the weight of its past.

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