Answer:
The U.S. government forced the Native Americans to move to reservations in exchange for protection from attacks by white settlers. In addition, the Indians were supposed to be given a yearly payment that would include money in addition to food, livestock, household goods and farming tools. So basically white people were greedy for their land.
Specialization refers to individuals and organizations focusing on the limited range of production tasks they perform best. This specialization requires workers to give up performing other tasks at which they are not as skilled, leaving those jobs to others who are better suited for them. We benefit from specialized workers because they give us what we need.
Potential energy
because it is not moving
The assassination of President Garfield triggered the civil service of the 1880s.
