The Roman Empire was huge too, so was the British Empire, so was the Arab Empire. He explained early on that it's not feasible to represent these civs at their heights. Re: The Iroquois, here is a map of the territories of tribes at the beginning of the Beaver Wars. Arguably, they took over Huron, Erie, and Neutral territory, which should bring them across to the Canadian side as well. However, we're really talking about just across the border, which isn't all that useful.