The transfer of power from one emperor to the next was often unpredictable. Often the army chose the next emperor. These are examples of:

When the army had to choose the emperor, this often happened because of political instability, social corruption, discredit in the Roman institutions, and weakness in the frontiers. These problems began to be common in the final years of the Roman Empire between the 3rd and 4th centuries C.E.

Explanation:

true is the answer to this

d) the constitution rights of native americans and their right to self-government on reservations