Answer:
America has more opportunities.
Explanation:
America has a larger and wealthier economy,causing people to immigrate there for a higher chance of getting a good pay.
Answer:
a competition between nations for superiority in the development and accumulation of weapons, especially between the US and the former Soviet Union during the Cold War.
i think it is A, D. but tell me if i am wrong.
Answer:
I think Barack Obama will be remembered as the first African-American ever to be elected president of the United States.