Why were the native americans forced to leave their homeland? please help

Working on behalf of white settlers who wanted to grow cotton on the Indians' land, the federal government forced them to leave their homelands and walk hundreds of miles to a specially designated “Indian territory” across the Mississippi River.

Explanation:

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances

answer; (d) they are in charge of the ushers and making sure the audience gets to their seats on time; they also control the box office; i know (c) is wrong and (b) don't make sense;