We show that in a fully integrated economy, in which there is free mobility of goods and factors, each member’s share of total output will equal its shares of total stocks of productive factors (i.e., physical and human capital). We label this result the equal-share relationship. This...

In light of 50 years of economic policies designed to integrate Europe - culminating in the elimination of euro zone national currencies in early 2002 - and a vast academic literature on international economic integration, it is of interest to assess how far European integration has come in...