Bloodless Border

In 1835, the states of Ohio and Michigan mobilized heavily armed militias, marched them to their shared border, and prepared to engage in a bloody civil war. The prize they were willing to kill for? A 468-square-mile strip of swampy land near the mouth of the Maumee River. This absurd standoff, born entirely from a terrible cartographical error, paralyzed the federal government and delayed Michiga...