The main goal of the League of Nations, established after World War I in 1920, was to promote international cooperation and prevent future conflicts through diplomacy and collective security. Formed under the Treaty of Versailles, the League aimed to provide a forum for resolving disputes between nations without resorting to war. It sought to improve global welfare by addressing issues such as labor rights, refugees, and disarmament. Although ultimately unsuccessful in preventing World War II, the League laid the groundwork for future international organizations, most notably the United Nations, and highlighted the importance of global governance in maintaining peace.