The USA was governed by Republicans. (2 jul 1921 año – 2 jul 1933 año)

Descripción:

Republicans supported isolationism at the time, so a Republican-ruled America is why the U.S. didn't join the League of Nations, reducing its validity, and could also have created some unrest because people wanted to become isolationist, but could not become completely isolationist without abandoning some of its economic interests.

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