Answer:
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Step-by-step explanation:
The correct answer is D. It wanted to be proactive in preventing future conflicts.
After World War II, the United States abandoned its isolationist policies because it recognized that isolationism had failed to prevent the outbreak of World War II and the devastation it caused. In order to prevent future conflicts and promote peace and stability around the world, the United States became actively involved in international affairs and took on a leadership role in the establishment of international organizations such as the United Nations. The United States also adopted a policy of containment against the spread of communism, which required active engagement in foreign affairs and military intervention when necessary.