In a Two-Country Classical Model of Trade with Many Commodities

Essay

In a two-country Classical model of trade with many commodities, briefly explain what would happen to the structure of trade in each of the following cases:(a) an increase in wages in one country;
(b) a change in the exchange rate;
(c) an improvement in productivity (lowering of the labor requirements/product) in one
country; and
(d) an increase in transportation costs.