The main purpose of the United Nations, established in 1945, was to promote international cooperation and maintain peace and security worldwide. Formed in the aftermath of World War II, the UN aimed to prevent future conflicts by addressing issues through diplomacy rather than war. Its founding principles promote human rights, social progress, and economic development. The organization provides a platform for dialogue among member states, engages in peacekeeping missions, and addresses global challenges such as climate change and humanitarian crises. The UN has evolved into a forum for cooperation on various issues, shaping international relations and fostering collaborative solutions.