Trade and Factor Flows in a Diverse EU : What Lessons for the Eastern Enlargement(s)?

This paper reviews the neoclassical and new economic geography (NEG) theoretical frameworks used to analyze the effects of integration on trade and factor flows, and the empirical work carried out within those theoretical frameworks for the European case. The European Union (EU) is of particular interest because it is illustrative of the tensions between deepening of the integration process and widening membership: whereas deepening requires homogeneity, widening has made the EU increasingly diverse. The orthodox framework saw trade and factor flows as substitutes, thus separating their analysis, and was mainly concerned with efficiency issues of trade integration. The NEG framework saw trade and factor flows as complements, and analyzed them jointly, looking mainly at distribution issues such as disparities in industry location and wages arising from a single market for goods and factors. The main lesson for the Eastern enlargement(s) is that integration in its various forms leads to an uneven distribution of gains across member countries when these have very diverse economic structures