Why was the size of the empire so important to the Mongol Empire? (Hint - think about all they controlled?)

The native americans, spanish, french and americans all name places in our state. the word “arkansas” came from the quapaw indians, by way of early french explorers. at the time of the early french exploration, a tribe of indians, the quapaws, lived west of the mississippi and north of the arkansas river.

Your answer is d)magnesium