Metallic money

The euro
Western European countries have traditionally done much of their trading with each other. Soon after the breakdown of the Bretton Woods system, some of these countries experimented with fixed exchange rates within their group. Before 1997, however, all such attempts had failed within a few years of their inception. Inter-European trade continued to expand under the aegis of the European Community (EC). Growth of trade fostered European economic integration and encouraged steps toward political integration in addition to the free exchange of goods, labour, and finance. In 1991, 12 of the 15 nations signing the Treaty on European Union (the Maastricht Treaty) had agreed to a decade of adjustment toward a single currency. The treaty took effect in 1993. Exchange rates were fixed “permanently and irrevocably” for the participating countries (tellingly, the treaty did not provide for a country’s withdrawal from the system). In 1995 the new currency was named the “euro.”

European Union: euro zone
Map indicating which members of the European Union use the euro as their national currency. The Greek Cypriot sector of Cyprus (not shown) also has adopted the euro.
Encyclopædia Britannica, Inc.

euro
Euros, the currency of the European Union.
© MistikaS—E+/Getty Images
The European Central Bank (ECB) was established in 1998 in Frankfurt, Germany, with a mandate from member governments to maintain price stability. Each member country receives a seat on the board of the ECB. In part because Germany sacrificed its dominant role in European monetary policy, the new arrangements provided increased opportunity for smaller countries such as the Netherlands, Belgium, and Austria to determine policy. However, 3 of the then 15 member states of the European Union (EU)—Denmark, Sweden, and the United Kingdom—decided either to remain outside or to delay entry into monetary union.
The new system began operation on Jan. 1, 1999. For its first three years the euro functioned as a unit of account but not a medium of exchange. During this transition period the values of debts, assets, and prices of goods and services were expressed in euros as well as in the local currency. In January 2002, euro notes and coins began circulating, replacing national currencies such as the French franc, German mark, or Italian lira. The euro floated against all nonmember currencies.