Question

The signers of the peace treaty supported the creation of the League of Nations. What happened that prevented the United States from joining the league?
a. Wilson liked it but it never passed in the Senate.
b. Wilson opposed the League and it never made it to a Senate vote.
c. The Senate liked it but Wilson opposed it.
d. The United States was not invited to join.

Answer 1

It was primarily that "a. Wilson liked it but it never passed in the Senate," since there was a strong isolationist sentiment in the United States, and people thought entering the League would bring them into another war. 

Answer 2

The correct answer is:

A. Wilson liked it, but it never passed in the Senate.

Explanation:

President Woodrow Wilson supported the idea of a League of Nations to settle future conflicts between countries; he even included it in the 14 Points he made to prevent another world war. Wilson attended meetings and negotiations and asked American citizens to support it but the United States' Senate opposed to League and failed to ratify the treaty because it feared that the U.S could lose sovereignty.