CONSTITUTION
First Independent State of Texas
Part of the Mexican Republic
Answer:
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.
An Act requiring an Oath of Allegiance and to support the Constitution of the United States to be administered to Masters of American Vessels clearing for foreign or other Ports during the present Rebellion.
I guess in russia or mexico im not sure