NC only apparently. Personally I think it should be NC and SC, just so you can call it "IOT, Carolina Wars."
BTW: I'm not joining any other IOTs where Mathalamus Empire or other excessive stupid crap/powergaming/metagaming are not strictly banned, at least for this month, I don't have the patience to DOW and fight long wars with all the stupid people who don't know how to play the game.
Also: BTW: I don't mind a stupid nation ONCE, but the same one more than once is annoying. (Really, anyone playing the same nation more than maybe twice is annoying, but if its a realistic nation its not THAT big of a deal, like Pacifistan was played by Owen everytime and I didn't care, if its a resurrected Historical empire that was unlikely to spawn even once, its more annoying, if its totally unrealistic its even more so.) To give an example, LH was Batmanistan once, and it was Actually very funny. But if he did it again, it would be annoying. Doubly so when its been done like four times and you literally cannot control yourself. It ruins the game.