The Mason-Dixon Lines history, replete with property disputes, persecution, and ideological conflicts, traverses our countrys history from its founding to today.

We live in a world of boundaries geographic, scientific, cultural, and religious. One of Americas most enduring boundaries is the Mason-Dixon Line, most associated with the divide between the North and the South and the right to freedom for all people. Sibert Medalwinning author Sally M. Walker traces the tale of the Mason-Dixon Line through family feuds, brave exploration, scientific excellence, and the struggle to define a cohesive country. But above all, this remarkable story of surveying, marking, and respecting lines of demarcation will alert young history buffs to their guaranteed right and responsibility to explore, challenge, change, and defend the boundaries that define them.