Europeans started to enslave Africans.
They started to use slaves instead of indentured servants, because the investment was better. Indentured servants only served for a few years, and then were granted freedom, while slaves were purchased and used for their entire lives. The investment of a slave was better than an indentured servant.
Answer:
The correct answer is B. The competition between the U.S. and the Soviet Union to get satellites and humans into space was known as the space race.
Explanation:
The space race was a competition between the United States and the Soviet Union that lasted approximately from 1957 to 1975. It involved the parallel effort between the two countries to explore outer space with artificial satellites, to send humans into space and to pose a human being in Moon.
Although its roots lie in the early rocket technologies and international tensions that followed World War II, the space race actually began after the Soviet launch of Sputnik 1 on October 4, 1957. The term originated as an analogy of the arms race. The space race became an important part of the cultural and technological rivalry between the USSR and the United States during the Cold War. Space technology became a particularly important arena in this conflict, both because of its potential military applications and because of its psychological effects on the morale of the population.
They arrived in 1500BC and developed the grouping of people based on their status and activities in life.
D. The elimination of social distinctions between the middle and working class.
