Michigan and Ohio had a war, michigan agreed to give up its claim on Ohio if it got statehood and the upper peninsula was a consolation prize. Wisconsin became a state later and never had the upper peninsula volumeone.org/…/252990-how-wisconsin-lost-the-upp…
How Wisconsin ‘Lost’ the Upper Peninsula
It's (kind of) common knowledge in Wisconsin that what is now Michigan's upper peninsula was once part of America's dairyland, and was somehow ceded our eastern neighbors. But just like most common knowledge, this isn't quite as true ...