When I wrote my book on EMU four years ago (Kenen 1995), very little had been written on the international dimensions of EMU. There was a chapter in the Commission's path-breaking study (European Commission, 1990). There were papers by Alogoskoufis and Portes (1991, 1992), Cooper (1992),...

Countries in a monetary union can adjust to shocks either through internal or external mechanisms. We quantitatively assess for the European Union a number of relevant mechanisms suggested by Mundell’s optimal currency area theory, and compare them to the United States. For this purpose, we...