In which conflict did the U.S. pursue a policy of isolationism before becoming involved in hostilities?
A: the Spanish-American war
B: the Korean war
C: world war 2
D: The civil war in Rwanda
It would be "C: world war 2" in which the U.S. pursued a policy of isolationism before becoming involved in hostilities, since many Americans were still disillusioned by World War I.