well as far i can see, everybody trying to teach their civ is the most important civ in the world; well everybody know that, every country's elementary and/or high school history lessons tries to teach their own culture first. but canada? c'mon, you people making me laugh. like "ancalimonungol" said, turks are most important civ in the middle east; but they still hardly added the civ4 with expansion pack. middle east important, because homo sapiens build their first cities in there. and turks, they build hagia sophia; the great wall build because of them, they have one of the world's biggest and important city "Istanbul" and we can found too many examples like these ones. again, what do you people are thinking about canada? electric bulb? telephone(sorry but that was stolen rom graham bell, right?

)? ok, maybe we can accept they have beautiful healthcare system, or great gini and HDI. than they need to add cuba too and switzerland; maybe south africa... anyway, much civ means better game, but if that's gonna be just 18, than there is no room for canada.
i don't know what civ's going to be in this game, so i need the predict mines.
-Americans
-Portugal
-Germany
-France
-Rome (Italy)
-Greece
-Ottoman (Turkey)
-Spain
-Egypt
-China
-Japan
-Korea
-Vikings
-England
-Arabs
-Indians
-Russia
and the last one could be Ethiopia or maybe Netherlands. But really, 18? You people really need to add much more civs than that. it's probably not a hard thing for sid and his team.