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 most recent wave of political integration in Europe is usually interpreted to represent a consequence of German unification, following which the other EU countries attempted to contain an imputed threat of the change in the European balance of power. This paper shows that German unification...