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When was the League of Nations established?
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League of Nations
Delegates attending a League of Nations meeting, c. 1930.
The League of Nations was established on January 10, 1920. It was created at the initiative of the victorious Allied powers following the conclusion of World War I to serve as an organization for international cooperation and to prevent future conflicts. While the organization was formally inaugurated on January 16, 1920, its official establishment date is recognized as January 10, 1920.12