How did Justinians actions contribute to the fall of the byzantine empire

Two of these describe "federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a "unitary" and a "confederate" system.

How many people died in battle during world war 1? a. 8-9 mill b. 3-4 mill c. 1 mill d. more than 10 mill

Explain each of the following: expressed powers, implied powers, and inherent powers.