The united states army won in most large scale fights with native americans. why do you think this so?

The United States Army won in most large scale fights with native Americans because the US had better weapons, such as guns

the hyksos invasion. the hyksos were able to attack egypt successfully because of their skills in using bronze weapons, composite bows and the use of the horse and chariot during the invasion. although the egyptians depict a barbarian-type overthrow, the truth is the seizure was likely a relatively peaceful one.