Answer: A: It lasted longer.
Explanation: The League of Nations was created in 1920 after World War I and failed to prevent the outbreak of World War II. It was disbanded in 1946, after only 26 years of existence. In contrast, the United Nations was established in 1945 after World War II, and it has lasted for more than 75 years. Therefore, the fact that the United Nations has lasted for a much longer period than the League of Nations suggests that it has been more effective in achieving its goals and maintaining international cooperation and stability.