What is the European Monetary Union (EMU)?

1. How do fixed exchange rates constrain inflationary monetary policy?
2. What is the European Monetary Union (EMU)? How do the countries of the EMU benefit from using a single currency? In what ways can using a single currency be a problem?
3. What is pegging? What advantages does pegging offer, and what problems can it run into? What is the controversy over China’s pegging the value of the yuan?