Which factor explains the high casualty rates of suffered by both sides in world war i?
a. aerial attacks on civilian populations
b. the use of poison gas and machine guns
c. the use of unrestricted submarine warfare
d. blimps used to direct artillery fire

it took two men to wrestle rome back from chaos and turn a republic into an empire. in the first century bc, rome was a republic. power lay in the hands of the senate, elected by roman citizens. but the senators were fighting for power between themselves.

its many islands, high mountains, and remote peninsulas isolated population centers.