Answer:
Frederick Jackson Turner argued that overseas expansion was a "safety valve" to keep ambitious Americans content.
Answer:
The answer is "Fear of Communism."
Explanation:
The Cuban fight for independence took place in the late 1890s. U.S. concerns were commercial, economic and about security. Cuba turned into a Communist country in the early 1960s following the revolution led by Fidel Castro.
The answer is D. Caused many workers to have their lives controlled by factory owners.
