Answer:
D) The United States promised to defend democracy by stopping communist expansion.
Step-by-step explanation:
During the Cold War (1945 - 1991), the policy of containment was a strategic approach by the United States to prevent the spread of communism, particularly by the Soviet Union. The idea was to "contain" the influence of communism to its existing borders and prevent it from spreading to other nations.
This policy involved providing economic and military assistance to countries facing the threat of communist expansion, as well as engaging in various geopolitical strategies to limit the influence of communist ideologies worldwide. The overarching goal was to defend democracy and capitalist systems against the perceived threat of communist expansion.