For 10 points, name this author of Principles of Political Economy and Taxation who formulated the theory of comparative advantage.
This economist, whose theory was updated for a continuum of goods in a 1979 paper by Dornbusch, Fischer, and Samuelson, was championed in the Cambridge capital controversy by Piero Sraffa. The difference in the return from the most productive use of a unit of land and the return from marginal fallow land determines land value in this man's law of rent. Robert Barro proposed that tax changes do not affect spending levels in an equivalence named for this man, who illustrated international trade using Portuguese wine and English cloth. For 10 points, name this author of Principles of Political Economy and Taxation who formulated the theory of comparative advantage.
This economist, whose theory was updated for a continuum of goods in a 1979 paper by Dornbusch, Fischer, and Samuelson, was championed in the Cambridge capital controversy by Piero Sraffa.
David Ricardo [accept Ricardian equivalence or Neo-Ricardian economics]