Answer:
World War II
The road to war
After World War I most Americans concluded that participating in international affairs had been a mistake. They sought peace through isolation and throughout the 1920s advocated a policy of disarmament and nonintervention. As a result, relations with Latin-American nations improved substantially under Hoover, an anti-imperialist. This enabled Roosevelt to establish what became known as the Good Neighbor Policy, which repudiated altogether the right of intervention in Latin America. By exercising restraint in the region as a whole and by withdrawing American occupation forces from the Caribbean, Roosevelt increased the prestige of the United States in Latin America to its highest level in memory.
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