<span>During the early 1960s, NASA’s Mercury program sent Americans into space.</span>
Monroe Doctrine and Roosevelt Corollary--the Monroe Doctrine first set the policy that the western hemisphere was closed to colonization. The Roosevelt Corollary took it a step further by providing military behind the policy.
Following the independence movement in the US and throughout Latin America, the US wanted to protect the area from future colonization. The Monroe Doctrine made the statement and then 80 years later the Roosevelt Corollary enforced the doctrine with our navy and army force.
Answer:
The Cold War.. Military alliances were formed as the West grouped together as NATO, and the East banded together as the Warsaw Pact. By 1951, Europe was divided into two power blocs, American-led and Soviet-led, each with atomic weapons. A cold war followed, spreading globally and leading to a nuclear standoff.
D: received lower wages than whites did.