Many people were concerned it would fail, after what happened at the end of World War I. But opinion in the United States had changed in those thirty years.”

Respuesta :

is this even a question i’m confused?

The Given statement is describing the establishment of United Nations, because of the unsuccessful formation of League of Nations.

United Nations

The need for United Nations was arise because of two reasons, firstly the failure of League of Nation in stopping second World War, secondly  the United States could not remain isolated from the world.

Hence the given statement says about UN as "Many people were concerned it would fail, after what happened at the end of World War I. But opinion in the United States had changed in those thirty years.”

Your Question is incomplete. The Complete Question is :-

Which of the three post-World War II developments (United Nations, Marshall Plan, or MacArthur’s Plan for Japan) is the speaker describing? Circle the correct answer and explain why you chose it.  

"Many people were concerned it would fail, after what happened at the end of World War I. But opinion in the United States had changed in those thirty years.”

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