Raul Prebisch and the Terms of Trade That Wouldn't Improve

This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.

Classical trade theory promised that a country specializing in what it produces best, and trading for the rest, gains from exchange regardless of what it specializes in. Raul Prebisch, as head of the United Nations Economic Commission for Latin America, looked at decades of trade data from countries that had specialized exactly as the theory recommended, exporting coffee, copper, wheat and other primary commodities, and found something the theory did not predict: the prices those commodities fetched on world markets tended to decline over time relative to the prices of the manufactured goods those same countries imported. His 1950 report argued the pattern, later called the Prebisch-Singer thesis after economist Hans Singer reached a similar conclusion independently, was not a temporary market fluctuation but a structural feature of trade between an industrial core and a commodity-exporting periphery. If true, the policy implication cut directly against free-trade orthodoxy: a peripheral country that kept exporting raw materials and importing manufactured goods would see its relative purchasing power erode indefinitely, so deliberate industrialization, building domestic manufacturing capacity behind tariff protection, was not a departure from sound economics but a necessary correction to a structural disadvantage international trade theory built around already-industrialized economies had overlooked.