Final answer:
The fact that the United States did not join the League of Nations supports the idea that many Americans agreed with the ideas of the isolationists.
Step-by-step explanation:
The fact that the United States did not join the League of Nations supports the idea that many Americans agreed with the ideas of the isolationists. The League of Nations was an international organization aimed at promoting peace and resolving conflicts, but many Americans were skeptical of its effectiveness and feared it would entangle the US in foreign affairs. This sentiment was reflected in the decision to not join the League of Nations.
Learn more about United States' decision not to join the League of Nations