Mark's song 'Sailing To Philadelphia' was inspired by the story of the Mason-Dixon Line in the US. For the 250th anniversary of the mapping of the line in 2017, Mark presented an episode of BBC Inside Out North East and Cumbria; sharing the story of surveyor Jeremiah Dixon, who originally hailed from County Durham. | Mark Knopfler

Originally drawn to settle a colonial dispute, the Mason–Dixon line grew into a lasting symbol separating North and South. Though invisible on the ground, its meaning shaped culture, law, and politics for centuries. Here, geography proves that lines on maps can carry enormous power. #MasonDixonLine #USHistory #USGeography #CulturalGeography #HistoricalBoundaries #MapFacts #GeographyFacts #DidYouKnow #ViralFacts #fblifestyle | Global Maps

Sailing To Philadelphia, the title song of Mark’s second solo album, was inspired by the story of the Mason-Dixon Line in the US. For the 250th anniversary of the mapping of the line in 2017, Mark presented an episode of BBC Inside Out North East and Cumbria; sharing the story of surveyor Jeremiah Dixon, who originally hailed from County Durham. | Mark Knopfler