User blog comment:UnofficialGameExpert78/Age of Empires II HD: The American Tribes/@comment-127769-20180911153620/@comment-127769-20180911174049

another thing you are not considering is the time period,  at the time of the middle ages or the game timeline ( fallof rome to year 1600) there were no horses in america therefore a civilization like the " apache" shouldn't had horses until very late. and only became relevant until American expansion to the West. Perhaps the only exception should be pmapuche as they aquired horses very soon from the spanish and still do that in the AEO II timeline