What 3 things did the league of nations involvement in the conflict show?

The League of Nations' involvement in conflicts highlighted its limitations in enforcing decisions and maintaining peace, as it often struggled to take effective action against aggressor nations. Additionally, it demonstrated the challenges of collective security when key powers, such as the United States, were not members or did not fully commit. Lastly, the League's failures underscored the need for stronger international cooperation mechanisms, eventually leading to the establishment of the United Nations after World War II.