Which of the following was a reason the us adopted a policy of isolationism before world war ii?
the large number of american casualties in the spanish civil war
the large number of american casualties in world war i
the desire to get americans involved in world conflicts
the desire to americans travel to foreign countries

The large number of American casualties in World War I

Explanation:

It is not option 1 because the Spanish Civil War didn't have American involvement and occurred in 1936 to 1939.

Not option 3 because that is not the definition of isolationism

Not option 4 because the desire to travel to foreign countries was not/is not a domestic policy issue.

the large number of American casualties in World War I

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