Policies Promoting Westward Expansion

Following the Civil War, the United States experienced a significant period of westward expansion, characterized by the movement of settlers into new territories and the displacement of Native American tribes. This period was marked by numerous legislative acts and policies that facilitated settlement, such as the Homestead Act of 1862. However, this expansion also led to crucial conflicts and challenges, especially in relation to the indigenous populations and their lands.

Which of the following policies was primarily aimed at promoting the settlement of the Great Plains and how did it impact the demographics of the region?