What are two effects that league of nation have?

The League of Nations aimed to promote international cooperation and prevent conflicts through dialogue and diplomacy, which laid the groundwork for future international organizations like the United Nations. However, it struggled with enforcement and lacked participation from major powers, leading to its inability to prevent aggression and conflicts, such as the outbreak of World War II. Its mixed legacy highlights both the importance of collective security and the challenges of achieving it in a diverse global landscape.