Answer: American Indians saw it as a way to help themselves, because both sides have promised that they would not use take over the land with force, and allow them to live where they were. American Indians also reacted strongly in helping the European powers because they found that the Europeans had extremely strong weapons (i.e muskets, cannons) and, if they were able to help the Europeans win (French or English), they could be rewarded with the weapons, and use it to attack other tribes and have dominance over their regions
Explanation: I hope this helps... I know it's alot
The ensuing Mexican–American War was waged from 1846 to 1848 with the loss of many thousands of lives and the loss to Mexico of all of its northern provinces.