Question

1. who opposed the united states joining the league of nations? the united nations u.s. congress germany

Explanation:

The United Nations was established after the League of Nations dissolved, so it couldn't oppose the US joining the League. Germany was initially excluded from the League and later joined, so it didn't oppose US membership. The U.S. Congress, led by isolationist sentiments, opposed the US joining the League of Nations as they feared it would entangle the US in international conflicts.

Answer:

B. U.S. Congress