Which of the following describes how nerva affected the roman empire?

How does the constitution limit the power of the federal government

How were japan's actions before and during world war 2 compare with germany's actions over the same period

How did african americans the union during the civil war? a. by serving as representatives in congress b. by enlisting in the military to fight c. by organizing massive slave revolts in the south d. by negotiating for peace with the confederacy