The League of Nations was established after World War I with the purpose of promoting peace and preventing future conflicts through collective security and diplomacy. Founded in 1920, it aimed to resolve international disputes and foster cooperation among member nations. The League sought to address issues such as disarmament, the prevention of war, and improving global welfare. Despite its goals, the League faced challenges, including the inability to enforce its resolutions and the absence of major powers like the United States. Ultimately, it was replaced by the United Nations in 1945, which inherited many of its ideals.