The correct option is: a. as Americans moved west to farm and find resources.
Indian Removal was a policy of the government of the States United in the nineteenth century whose objective was to displace Native American tribes who lived on the east side of the Mississippi River to lands west of the river. Because of the fast increase in the country's population, the US government urged the Indian tribes to sell their land in exchange for a new Indian territory, outside the borders of the then existing states. This process was accelerated with the approval of the Law on Forced transfer of the Indians of 1830, which provided funds to President Andrew Jackson to carry out land exchange treaties.
