The Gains from International Trade in the PPC Model

Now that we’ve established the difference between absolute and comparative advantage, we can proceed to how countries stand to gain from trade when they specialize in and produce the goods for which they have a comparative advantage. In this lesson we will explain how a “real exchange rate” can be determined between two goods and two countries that is mutually beneficial for both countries and then show how trade can increase the total possible level of consumption and effectively shift the PPC curve outwards.