Answer:
Step-by-step explanation:
Assimilation was the principal objective of American engagement with Native Americans in the 1800s (becoming part of American society and culture). People who refused to assimilate were put on reserves.
Thus, Option A is correct.
In what ways did the 1850s see a change in the US government's attitude?
Native Americans' way of life underwent a significant transformation between 1850 and 1900. American Indians were evicted from their homes as their ancestral lands were divided up due to U.S. government policy.
They no longer roamed the Plains alone; now it was populated by white immigrants. Indian policies of the federal government forced them into reservations and sought to "Americanize" them over the years, robbing them of their land, food, and way of life. Since many American Indian tribes were dispersed, assimilate, and suffer military loss, the Native American population fell to less than 250,000 by 1890.