Kruelgor
Emperor
Despite its name "city state", is it possible to make a City State control more than 1 city?
The first screenshot of this thread shows a city-state that has conquered a greek city: http://forums.civfanatics.com/showthread.php?t=382848
There's a cool thread in the discussion section where Warsaw has basically annexed the Aztec empire. They have I think five or six cities, including Tenochtitlan.
They totally can, I've seen Venice with Heliopolis now. As to whether they can found anything, I don't know. What are the limits of a City State? That they can't build wonders, initiate diplomacy or build settlers? Can they buy land?
I can understand not calling them "Minor Nations" though - "Minor" might imply the state they're named for is less important whilst "City State", though something of a misnomer, is... semi-accurate here. It's a city representing a nation state.