Countries, regions and trade: on the welfare impacts of economic integration

Kristian Behrens (1) , Carl Gaigné (2) , Gianmarco I.P. Ottaviano (3, 4, 5) , Jacques-François Thisse (1, 5, 6, 7)

1 CORE - Center of Operation Research and Econometrics [Louvain]
2 ESR - Unité de recherche d'Économie et Sociologie Rurales
3 UNIBO - Alma Mater Studiorum Università di Bologna [Bologna]
4 FEEM - Fondazione Eni Enrico Mattei
5 CEPR - Center for Economic Policy Research
6 PJSE - Paris-Jourdan Sciences Economiques
7 PSE - Paris School of Economics

We study the impact of falling international trade costs and falling national transport costs on the economic geography of countries involved in an integration process. Each country is formed by two regions between which labor is mobile, whereas there is no international mobility. Goods can be traded both nationally and internationally at positive, but different, costs. A decrease in trade costs and/or in transport costs has a direct impact on prices and wages in both countries. This allows us to account for the impact of changes in these parameters on the economic geography and welfare of each country. We show that, as trade barriers fall, the benefits of integration come after its costs. We also show that national transport policies are of the beggar-thy-neighbour type. On both counts, policy coordination is required in the process of economic integration.

Keywords: AGGLOMERATION; TRANSPORT COST; ECONOMIC GEOGRAPHY; REGIONAL INTEGRATION; TRADE COST

Domains: Humanities and Social Sciences; Economics and Finance

Kristian Behrens, Carl Gaigné, Gianmarco I.P. Ottaviano, Jacques-François Thisse. Countries, regions and trade: on the welfare impacts of economic integration. European Economic Review, 2007, 51 (5), pp.1277-1301. ⟨10.1016/j.euroecorev.2006.08.005⟩. ⟨halshs-00754213⟩