What's the BBC referring to?

Phoenix NPR plays BBC news here and there throughout the day, and I've heard the BBC announcers reporting about news in
Somali-er
Indy-er
Chine-er
Australy-er
Americ-er
Ken-yer
Kory-er
Flori-der
Carolin-er (both north and south)
Alask-er
Indian-er
Californ-er
Nevadd-er
Arizone-er
I'm not quite sure where all of those "-er" regions really are, but the English invented the language, so I really should find out.