Answer:
World War II. This event marked the end of American isolationism and neutralism and the beginning of foreign and defense policy of intense internationalism. ... The U.S. economy was the only major economy that came out of WW II intact. This made the country an instant economic superpower.
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Answer:
to make certain that there will not be another world war or a conflict of such a massive scale in the world.
Moreover, it aimed to work as a negotiating force during political tensions and controversies among the imperialist nations at the time.
Explanation:
