Evaluate the effects of Franklin D. Roosevelt’s Good Neighbor Policy in the Americas.

Franklin D. Roosevelt initiated the Good Neighbor Policy when he began his first term as president in 1933. His intention was to foster better relations with the countries of the Western Hemisphere in Central and South America. He alluded to the policy in his inaugural address on March 4, 1933:

In the field of world policy I would dedicate this nation to the policy of the good neighbor—the neighbor who resolutely respects himself and, because he does so, respects the rights of others—the neighbor who respects his obligations and respects the sanctity of his agreements in and with a world of neighbors.

At a conference of American states in Montevideo, Uruguay, in December 1933, Roosevelt's secretary of state, Cordell Hull, said: "No country has the right to intervene in the internal or external affairs of another." With this doctrine in mind, the United States withdrew from its occupation of Haiti and Nicaragua. It also annulled an agreement that authorized intervention in Cuba and resolved a dispute with Mexico over compensation for oil assets. The United States Maritime Commission worked with Moore-McCormack Lines to operate a fleet of ocean liners and cargo ships for regular runs to major ports in South America.
Besides these efforts, FDR worked on improving relations with people of Latin American descent within the United States. He appointed Nelson Rockefeller as head of the Office of the Coordinator of Inter-American Affairs. This organization's purpose was to eliminate existing stereotypes of Latin Americans. One of the ways it sought to do this was through Hollywood films. It encouraged film companies to hire Latin Americans and present Latin America favorably in movies. Hollywood luminaries that the organization sent to Latin America as goodwill ambassadors included Walt Disney, Bing Crosby, Rita Hayworth, and Orson Welles.
The Good Neighbor Policy lasted until the end of World War II and the beginning of the Cold War, when the United States began to intervene once again in the governments of Latin America.
http://fdrfoundation.org/good-neighbor-policy/

https://history.state.gov/milestones/1921-1936/good-neighbor

https://www.whitehouse.gov/about-the-white-house/presidents/franklin-d-roosevelt/

Roosevelt's Good Neighbor Policy was successful because it accomplished its short-term goals with respect to military power and national security. By fostering cooperation and goodwill with Latin America, the United States could count on Latin American support in the Second World War once the United States entered the fray. Latin American nations supported the American war effort in a variety of ways. They furnished locations for American military bases. They provided resources and supplies, and they cracked down on Axis supporters between their own borders.
Looking past World War II, however, the Good Neighbor Policy ultimately faltered. While the Roosevelt administration had hoped that the Good Neighbor Policy would lead to increased trade with Latin America, any hopes for economic growth were thwarted by Latin America's growing mistrust of the United States due to the latter's anti-communist stance. As the Cold War began, the United States once again began meddling in other countries' business—including interventions in Cuba, Guatemala, Chile, and Nicaragua—effectively ending the Good Neighbor Policy.
https://history.state.gov/milestones/1921-1936/good-neighbor