The document discusses the implementation of a single currency, specifically the euro, among EU member states. It describes the three stages of the Economic and Monetary Union (EMU) that led to the euro: 1) capital movement liberalization, 2) irrevocably fixed exchange rates, and 3) monetary policy transfer to the European Central Bank. Six reasons for implementing the euro are provided: increased trade, employment mobility, price transparency, lower inflation, easier business expansion, and economic policy coordination. One disadvantage is the lack of a unified fiscal policy.