: Ricardo posits that the exchange value of most commodities is determined by the total quantity of labor required for their production.
: Known as Ricardian Rent, this states that rent arises due to the use of land with varying fertility. As population grows, less fertile land is cultivated, increasing the rent on more productive land. Principios de EconomГa PolГtica y TributaciГіn. ...
On the Principles of Political Economy and Taxation - Econlib : Ricardo posits that the exchange value of
: Ricardo's most famous contribution. It argues that international trade is mutually beneficial if countries specialize in goods where they have the lowest relative opportunity cost, even if one country is more efficient at producing everything. On the Principles of Political Economy and Taxation
David Ricardo (1772 – 1823) was a prominent classical economist who gave a systematized form to a rising discipline of 'economics' economicsociology.org
David Ricardo: What is the Key Problem in Political Economy?