Which economic theory argues that changes in velocity are predictable and the crowding-out effect is substantial?

Economists such as James Tobin and Paul Samuelson claimed that _________ provided solid evidence of the effectiveness of Keynesian policies

a. increases in deficit spending accompanied by extremely low unemployment during WWII b. increases in taxes accompanied by rising federal budget surpluses c. increases in the money supply accompanied by falling interest rates d. price controls accompanied by inflation

Which economy tends to use loyalty as a motivating factor?

a. China b. India c. USSR d. Japan e. all of the above