What was one major difference between the League of Nations and the United Nations (UN)?

Both organizations aimed to prevent conflict through international cooperation, so the League did not simply avoid that goal. A major difference is that the United Nations can use peacekeeping forces to help enforce or maintain peace, while the League lacked a comparable enforcement arm. Therefore, the correct choice is “The UN has an enforcement arm to aid in peacekeeping.”

AI-written and checked against the verified answer.