According to what I learned in grade school history, the rivalry goes back the the "Toledo War": https://en.wikipedia.org/wiki/Toledo_War https://en.wikipedia.o

According to what I learned in grade school history, the rivalry goes back the the "Toledo War": https://en.wikipedia.org/wiki/Toledo_War https://en.wikipedia.org/wiki/Toledo_War I wouldn't be surprised if early Michiganders had an inferiority complex due to rough pioneer living in a nasty swamp, and if Ohioans later resented MI's growth into an industrial powerhouse during the early 20th century.