Why did the united states enter the vietnam war

to prevent a communist takeover of South Vietnam. Hope this helps.

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.

he believed that strong monarchies would lead to social and political stability.