Cyrodiil-True Modern North America
Slightly old Rome
High Rock and Orsinium-England-Ireland
Skyrim-Germany considering Atmora as Russia.
Black Marsh-South America(amazonian region)
Hammerfell-Middle East
Elsweyr-Possibly India Geographically as it has a lot of diversity(this is tough one)
Now you guys do the tough ones
There's 1.Morrowind
2.Smmerset Isles
3.Valenwood
4.Akavir
5.Pyandonea
7.Atmora
I'm not trying to piss people off this is purely acedemic..I hope it's treated as such.