The Eurosystem is the system of central banks consisting of the European Central Bank and the central banks of the member states of the European Union whose currency is the euro. It is part of the European System of Central Banks. The European Central Bank (ECB) (French: Banque Centrale Europeénne, German: Europäische Zentralbank) is the Central Bank of the EU (the Eurozone precisely) and in charge of monetary policy for the 12 EU countries that currently use the Euro currency. ... The euro (plural euro, symbol: €; banking code: EUR) is the official currency of the European Union and single currency for over 300 million Europeans in the following twelve European Union member states: Austria, Belgium, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, the Netherlands, Portugal and Spain; collectively also known as... The European System of Central Banks (ESCB) is composed of the European Central Bank (ECB) and the national central banks (NCBs) of all 25 EU Member States. ...