Could someone tell me the name of a game if I tell him the description? Please?

Some time ago I was playing a neat game and I was very happy when I finished it but now when I want to try it again I cant remeber it's name. It was a strategy game, quite old, where you control the american indians like aztecs. You start from one map depinding on the tribe you choose and adn you must conquer the whole island and then defeat the europeans(they only show off at the end so the game is not about them). After you gain victory over more terrains you can look on multiple maps and the time pes if you press a on. Also buildings and unit training takes time (that is controlled by that on). If someone has played that game and might know of it I'd be very thankfull