The League of Nations was an international organization founded after World War I in 1920. Its main goal was to promote peace and cooperation among countries to prevent future conflicts. The League aimed to resolve disputes through negotiation and diplomacy rather than war, and it included member nations from around the world. Despite its noble intentions, the League struggled to maintain peace and faced challenges, such as the absence of major powers like the United States. It ultimately failed to prevent the outbreak of World War II and was dissolved in 1946, leading to the establishment of the United Nations.