Final answer:
The Indians in the Northwest Territory went to war with the US because they disagreed with US policies and encroachment on their land.
Step-by-step explanation:
The Indians in the Northwest Territory went to war with the US because they disagreed with US policies and encroachment on their land.
Settlers encroaching on Native American land created an 'Indian problem' in the American West, which required government intervention. The violence of the Indian Wars sparked debate about policy regarding Native Americans, as tribes feared a greater loss of land through expansion.
Ultimately, the settlers sought to eliminate the tribes from the lands they desired, leading to the transformation of tribal cultures as the federal government forced tribes onto reservations.