One major difference between the U. S economy and post- world war II was that: a) The economy remained stable after world war I, but became depressed following World War II
b) the U. S subscribed to a policy of isolationism after world war I, but expanded international trade and multinational corporations after World war II
c) People had more discretionary income to spend after world war I than after World war II
d) The U. S increased its involvement in the world economy after World war I and decreased its involvement after World war II