Our examination of the laws governing international trade begins with David Ricardo’s theory of comparative advantage. This theory has dominated bourgeois political economy as regards the theory of international trade for the last two centuries. It has survived the transition from his theory of value based on the quantity of labor socially necessary to produce a commodity of a given use value and quality to the modern marginalist theory of value. It has also survived the transition from the gold standard to the universal use of so-called fiat money.