Final answer:
It is true that by the late 19th century, displacements caused by westward expansion and treaty violations forced most Native Americans onto federal reservations where they faced numerous challenges.
Step-by-step explanation:
By the late 19th century, forced migrations and diminishing land resources indeed resulted in most Native Americans living on federal reservations. This is a true statement. As whites settled westward, Native American tribes were displaced from their homelands. Treaties were often violated by settlers, with the government doing little to implement them. As a result, Native Americans were forced onto reservations, which were federal lands set aside for them and where non-Indians could not settle. Unfortunately, reservation land was frequently poor and unsuitable for traditional economic practices like farming or raising livestock for the displaced tribes. The transition to reservations and the policies enacted, such as the conversion attempts by protestant missionaries and the removal of children to boarding schools, significantly disrupted traditional tribal life and fostered dependency on the Bureau of Indian Affairs.