Two seemingly unconnected empirical results suggest an intriguing mechanism. First, economic integration helps harmonize prices internationally, with trade being the primary channel (Rogoff 1996, Goldberg and Knetter 1997). Second, monetary union may greatly increase the amount of trade among...

The paper studies the incentives to join a monetary union, and the incentives to reform within a monetary union and within the candidate countries, respectively. It presents some "orders of magnitude" evidence on the size and balance of the incentive effects for joining and being a member, and...