I'd say pollution or disease.
Answer: D. It felt the League of Nations would restrict America of its sovereignty.
Details:
The United States never joined the League of Nations, in spite of the fact that an organization such as the League of Nations was the signature idea of US President Woodrow Wilson. He had laid out 14 Points for establishing and maintaining world peace following the Great War (World War I). Point #14 was the establishment of an international peacekeeping association.
The Treaty of Versailles adopted that idea, but back home in the United States, there was not support for involving America in any association that could diminish US sovereignty over its own affairs or involve the US again in wars beyond those pertinent to the United States' own national security. Because of its objections to membership in the League of Nations, the United States Senate refused to ratify the Treaty of Versailles.
The Space Race was a 20th-century competition between two Cold War rivals, the Soviet Union<span> (USSR) and the United States (US), for supremacy in spaceflight capability.</span>
The correct answer to this open question is the following.
The methods and roles of leaders and organizations in the movement for independence in the period between 1945 and 1975 were the following.
We are talking about countries such as Cuba, Vietnam, Israel. China, Ghana, and India.
So let's set the example of Cuba. Cuban leader Fidel Castro organized the Revolution in Cuba and deposed President Fulgencio Batista in January 1959, after six years of struggle on the island. The United States had supported president Batista, but the Cuban leader and the Communist forces were backed by the Soviet Union.
So we can say that Castro and other leaders of the time, showed the courage, determination, and character needed to organize his people and start independence movements to grant freedom for their respective countries, as was the case of Mahatma Gandhi in India, or Mao Zedong, in China.