The basic argument for free trade is based on the economic theory of comparative advantage: each region should concentrate on what it can produce most cheaply and efficiently and should exchange its products for those it is less able to produce economically. Cf: Columbia Encyclopedia. | The basic argument for free trade is based on the economic theory of comparative advantage: each region should concentrate on what it can produce most cheaply and efficiently and should exchange its products for those it is less able to produce economically. Cf: Columbia Encyclopedia. |