How did the reservation contribute to US settlement?

Reservations played a significant role in U.S. settlement by confining Native American populations to designated areas, thereby freeing up land for European-American settlers. This policy facilitated westward expansion and economic development, as settlers moved into previously occupied territories. The establishment of reservations often involved broken treaties and displacement, which further accelerated the settlement process and led to the marginalization of Indigenous communities. Ultimately, reservations became a means to control and assimilate Native Americans while promoting the growth of the United States.