Final answer:
The Reservation system replaced treaties for dealing with westward expansion of Native Americans in the US.
Explanation:
The Reservation system replaced the treaty system when dealing with the 'Indian Problem' of westward expansion in the United States. The government shifted its approach towards establishing reservations for Native Americans, aiming to force them onto these lands for 'protection' and 'civilization.'
Learn more about Native American policies and westward expansion here:
https://brainly.com/question/21751291
