Expansionary fiscal policy uses ________ government spending and ________ taxes to increase aggregate economic activity

Suppose the world economy is divided into two halves. In Region A, all economies experience a decrease in desired saving, while desired saving is unchanged in Region B

If there is open trade and perfect capital mobility across the two regions, which of the following is true? A) Actual saving in Region B has increased. B) Actual investment in Region A has increased. C) Region A's imports from Region B have decreased. D) all of the above E) none of the above

Game theory is necessary to understand which kinds of markets?

a. monopoly b. competitive c. oligopoly d. All of the above are correct.