BAD idea. If you take it this way you can come up with over 1000 civ's. Every society changes in the course of history, so do the civ's. In fact E.G. the Germans are NOT Germany, they represent the German culture group. It is something the English did wrong in their name giving. As the Germans call it Deutschland (called after a specific German group).
The Scandinavians, German, Dutch and Austrians all are Germans (And no German citizen, don't confuse those 2 things).
Same goes for the Roman (Spain, Italy, France (partly), Switserland (partly) and Romania. But since the Spaniards had a huge influence in the course of renaissance they were taken as a specific Civ. Same goes for the French with Napoleon etc.
In my H.O. I beleive the Americans should be taken out of the different civs. They are just English, as good as the Australians. You could see the American as a revolted civ (like in Civ II), but not a civ with a history of 6000 years (not even 250 yet).
There are a few basic Civ's, and that are (according to me) Roman, German, Russians and English (Goths if you want) (for Europe), Egyptian, Zulu and Ethiopians (?) (for Afrika), the Chinese, Japanese, Indian and Arabians (or Babylonians if you like) (for Asia), Aztec and Inca's and one other native N. American civ (for the Americas).
For the rest you could add some other great civs if you like that played a MAJOR role in the course of history, like the French, Spaniards, Greek (perhaps the should be basic too), Mongols, Ottomans, Cartagians etc.
But please, what did the Danish, Dutch, Austrians, Portugese, Irish and a lot more civs contributed in the course of history?
They all emigrated to the America's, yes, but never had a great empire. (No, not even the Dutch), and yes I am Dutch.
New York is and will be New Amsterdam!!! LOL
Wow, what a post, but I think I made my point.