in the U.S., the introduction of tax-deferred savings plans, such as 401Ks, caused interest rates to 0 decrease. 0 change uncertainly. 0 not change. 0 increase. Refer to Figure 1 above. If this countryr allows free international trade, then at a world price of $3, this country will 0 export 20 units. 0 import 60 units. 0 import 20 units. 0 export 60 units