This description leaves out the why. Why did the tribes start adopting these ways of life? The wiki link itself talks about how they continuously had their lan

This description leaves out the why. Why did the tribes start adopting these ways of life? The wiki link itself talks about how they continuously had their land stolen, the deer population they hunted for food was almost made extinct by the colonists, and a general attempt to claim ownership and sovereignty over their land in a way that was in line with how the European powers viewed ownership.