How did the policy of manifest destiny aggravate already existing tensions in the United States

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

during world war ii, the united states officially had no propaganda, but the roosevelt government used means to circumvent this official line. one such propaganda tool was the publicly owned but government-funded writers' war board (wwb).

explanation:

true, they can both only can be studied with ancient text.