Which organization did South Korea request support from during the North Korean invasion in 1950?

• A. World Health Organization
• B. United Nations
• C. North Atlantic Treaty Organization
• D. League of Nations

Answer: (B)

During the North Korean invasion of South Korea in 1950, the South Korean government requested support from the United Nations. The invasion marked the beginning of the Korean War, and South Korea sought international aid to repel North Korean forces. The United Nations, which had been established in the aftermath of World War II to promote peace and security, quickly responded to South Korea's plea for assistance.

The UN Security Council convened and, in response to the invasion, passed resolutions calling for member states to provide military assistance to South Korea. This led to a significant multinational military contribution under the UN flag, primarily led by the United States. This action underscored the UN's role in collective security and international response to aggression.

In contrast, the other choices are not correct because they were either unrelated to military support in this context or did not exist in the relevant time period. The World Health Organization focuses on health issues, the North Atlantic Treaty Organization was not involved in this region during this conflict, and the League of Nations had been dissolved in 1946 and was unable to respond to the crisis.