Comparative Advantage:The concept developed by Ricardo that explains how countries can benefit from trade by specializing in the production of goods they can make most efficiently and exchanging them for goods they produce less efficiently.
Labor Theory of Value: The economic theory that the value of a good or service is determined by the amount of labor required to produce it, which was a central tenet of Ricardo's economic thought.
Theory of Rent: Ricardo's theory that explained how the price of land is determined by its fertility and proximity to markets, and how this affects the distribution of wealth in an economy.