The term refers to a pivotal international organization established in 1945 following World War II. Its primary objective was to foster global cooperation and prevent future conflicts by providing a platform for dialogue and collective action on matters of peace and security, economic development, and human rights. An example of its early impact was its involvement in the Korean War, where it authorized a multinational force to defend South Korea against North Korean aggression.
Understanding this organization is crucial for Advanced Placement United States History students because it represents a significant shift in American foreign policy from isolationism to international engagement. Its creation and subsequent actions profoundly shaped the Cold War, influenced decolonization movements, and continue to be a central component of the post-war global order. Analyzing its successes and failures provides valuable insight into the complexities of international relations and the role of the United States within it.