The currency used in Europe is the Euro (€), which is the official currency of 19 of the 27 European Union member countries, collectively known as the Eurozone. The Euro was introduced in 1999 for electronic transactions and subsequently issued as physical banknotes and coins in 2002, replacing various national currencies. It aims to facilitate trade, enhance economic stability, and simplify travel among member countries. While not all European countries use the Euro, its influence in economic policies, cross-border exchanges, and global markets has made it one of the most significant currencies worldwide.