I know there was an assembly line and improvement of living conditions
The correct answer is option A. "the Soviet Union built them too". The nuclear arms race took place during Cold War, and was a competition for supremacy in nuclear warfare between the United States and the Soviet Union. Under this competition if the United States built hydrogen bombs, the Soviet Union would built them too in order to stay in line with his competitor.
Answer:
With an idealized view of what life was like in the Mid-West, and the realization that the growing number of homeless children in the city would one day result in a serious crime problem, Brace began his “placing out” program in 1854 with a group of forty-six boys traveling by train to Michigan with an agent.