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Do South‐South trade agreements increase trade? Commodity‐level evidence from COMESA

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  • Anna Maria Mayda
  • Chad Steinberg

Abstract

South‐South trade agreements are proliferating. Yet the impact of these agreements is largely unknown, as existing North‐North and North‐South micro‐level studies are likely to yield misleading predictions for South‐South trade agreements. This paper estimates the impact of COMESA on Uganda's imports between 1994 and 2003. Detailed import and tariff data at the 6‐digit Harmonized System level are used for more than 1,000 commodities. Based on a difference‐in‐difference estimation strategy, the paper finds that – in contrast to evidence from aggregate statistics – COMESA's preferential tariff liberalization has not considerably increased Uganda's trade with member countries, on average, across sectors. The effect, however, is heterogeneous across sectors. Finally, the paper finds no evidence of trade‐diversion effects. Résultats au niveau des biens pour le COMESA. Les accords commerciaux Sud‐Sud prolifèrent. Or l'impact de ces accords reste largement inconnu, car les micro‐études des accords Nord‐Nord et Nord‐Sud sont susceptibles de mener à des prévisions trompeuses quand il s'agit d'accords Sud‐Sud. Ce texte évalue l'impact de COMESA sur les importations de l'Ouganda entre 1994 et 2003. On utilise des données détaillées sur les tarifs et les importations au niveau des codes à six chiffres pour plus de 1000 biens. A l'aide d'un modèle d'écart dans les différences, on découvre que – contrairement à ce que suggèrent les statistiques agrégées – la libéralisation des tarifs préférentiels de COMESA n'a pas accru considérablement le commerce avec les pays membres en moyenne dans tous les secteurs. L'effet est différent selon les secteurs. De plus, il appert qu'il n'y a pas eu diversion du commerce.

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  • Anna Maria Mayda & Chad Steinberg, 2009. "Do South‐South trade agreements increase trade? Commodity‐level evidence from COMESA," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 42(4), pages 1361-1389, November.
  • Handle: RePEc:wly:canjec:v:42:y:2009:i:4:p:1361-1389
    DOI: 10.1111/j.1540-5982.2009.01548.x
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