Explain why the United States and the Soviet Union engaged in the Space Race and when It occurred? ​

They happened because during the Cold War the US and the Soviet Union engaged a competition to see who had the best technology in place. It occurred in mid 1950s (not sure)

Explanation:

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.

b.   jim crow laws were enacted in northern states.