The establishment of the United Nations (UN) in 1945 was primarily driven by the desire to promote international cooperation, prevent future conflicts, and foster peace after the devastation of World War II. The UN aimed to create a forum for dialogue among nations, addressing issues such as human rights, economic development, and humanitarian aid. Formed with 51 member states, the UN's foundational principles emphasize collective security and the promotion of social progress. Over time, it has expanded its initiatives to include peacekeeping missions and efforts to combat global challenges such as poverty and climate change, remaining a central institution in international relations.