The establishment of the United Nations in 1945 is marked by the signing of the UN Charter. This event followed the devastation of World War II, aiming to prevent future global conflicts and promote international cooperation. The UN was founded to foster peace through diplomacy, humanitarian efforts, and development initiatives. The organization comprised member states committed to upholding the principles of human rights and social progress, emphasizing the importance of collaborative approaches to solving global challenges. The UN continues to be a cornerstone of international relations today.