The significance of the establishment of the United Nations (UN) in post-WWII global governance lies in its role as a platform for international cooperation and peacekeeping. Created in 1945, the UN aimed to prevent future conflicts by fostering dialogue, promoting human rights, and coordinating responses to global challenges such as poverty, health crises, and climate change. The UN also sought to maintain security and stability through peacekeeping missions and conflict resolution. Its creation marked a significant shift towards multilateral diplomacy, emphasizing collaboration over unilateral action, and set a foundation for modern international relations.