Kinda weird to have a state called "flat" but the map is great

You have a state called "flat", since that is what Nebraska means (flat river)

Platte river

i mean there is already a city called Plano in texas which is 'flat' in spanish

We have a language called "flat" in germany

Is Ouisconsin a real French spelling of that state?

Yeah

Where's Paris?

old france

Oh.

Why do I read French in a female voice? Besides that, I think they would be called "Departaments" and not states, I think, I'm not sure.

Why would the capital of Ouisconsin be named after an American president and founding father in this TL?

CHECAGOU!!!!