1. The League of Nations was established in 1920 as a result of the Treaty of Versailles, following the end of World War I.
2. The main goal of the League of Nations was to promote international cooperation and prevent future conflicts through diplomacy and collective security.
3. The League had 58 member states at its peak, but it was largely ineffective in preventing aggression and conflict in the 1930s.
4. The League's most notable failures include its inability to stop the Japanese invasion of Manchuria in 1931, the Italian invasion of Ethiopia in 1935, and the German rearmament and remilitarization of the Rhineland in 1936.
5. The League of Nations was dissolved in 1946 and replaced by the United Nations, which was established in 1945.
6. Despite its shortcomings, the League of Nations laid the groundwork for the principles of collective security and international cooperation that continue to shape global diplomacy today.