Great Quiz! The Map is awesome, but you called Chicago a capital, which it is not, and Springfield OH wasn't accepted when I typed Springfield IL, also, what is the category for inclusion, population? I see a lot of bigger cities like Fort Wayne, South Bend, Aurora, Cinncinati and Youngstown not there.
I have lived in very close proximity to Freeport, MN my entire life apparently and literally never heard of it until I just looked it up. Maybe a little too obscure, for that area on the map anybody who knows Minnesota probably guessed St. Cloud.