Some Americans opposed US participation in the League of Nations because they
felt the US might not have enough resources to solve its own problems.
worried that the league might prevent the US from going to war again.
believed that European nations would become more isolated.
were against entering into an agreement with Germany and the Soviet Union.

Respuesta :

felt the US might not have enough resources to solve its own problems is correct. Americans felt that they'll lose power over their internal and external affairs if they joined the league. 

A lot of Americans were worried about the U.S. joining the League of Nations because they felt the US might not have enough resources to solve its own problems.

After the first World War:

  • A lot of Americans wanted to go back to isolationism
  • Several Americans did not want to get involved in the affairs of Europe as they felt it would bind them to the Europeans financially

For these reasons and some others, the U.S. was prevented from joining the League of Nations which meant that the League was not very effective as the U.S. was too powerful to be excluded.

In conclusion, people feared the U.S. did not have the resources needed to join the League.

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