External Economies and International Trade Redux

Gene Grossman and Esteban Rossi-Hansberg

No 14425, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: We study a world with national external economies of scale at the industry level. In contrast to the standard treatment with perfect competition and two industries, we assume Bertrand competition in a continuum of industries. In this setting, many of the "pathologies" of the standard treatment disappear. There typically exists a unique equilibrium with trade guided by "natural" comparative advantage. And, when a country has CES preferences and any finite elasticity of substitution between goods, gains from trade are assured.

JEL-codes: F1 F11 (search for similar items in EconPapers)
Date: 2008-10
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Published as Gene M. Grossman & Esteban Rossi-Hansberg, 2010. "External Economies and International Trade Redux," The Quarterly Journal of Economics, MIT Press, vol. 125(2), pages 829-858, May.

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