Question

What did the refusal of the United States to join the League of Nations indicate

Answer 1

The rise of isolationism in the Congress

Step-by-step explanation:

Answer 2

Answer:
The rise of isolationism in the Congress
Step-by-step explanation:
The League of Nations was an organization that was created at the end of WWI to establish peacekeeping.
The US Congress at the time had some powerful isolationism members that opposed to any US involvement in the League and in any international conflicts. The Senate then refused to ratify the treaty and the US did not become a member of the League of Nations.