Which international organization was established after World War II to promote peace and cooperation?

The United Nations was established in 1945 following the devastation of World War II with the primary goal of promoting peace, security, and international cooperation. Its creation stemmed from the desire to prevent future conflicts and foster an environment in which nations could work collaboratively to address global challenges. The UN functions as a platform for dialogue and collective action among its member states, facilitating discussions on issues like human rights, humanitarian assistance, and sustainable development.

In contrast, the League of Nations, which was formed after World War I, ultimately failed to prevent World War II, demonstrating the need for a more robust and centralized organization. The North Atlantic Treaty Organization (NATO) was established in 1949 primarily as a military alliance for mutual defense rather than a comprehensive organization for global peace and cooperation. The European Union emerged later, in the mid-20th century, primarily focused on economic and political integration among European countries instead of the broader international peace-building objectives emphasized by the United Nations.