The main currency of the European Union is the Euro (€). Introduced in 1999 for electronic transactions and in 2002 for physical currency, the Euro is used by 19 of the 27 EU member states, collectively known as the Eurozone. Not only does it facilitate trade within the EU, but it also symbolizes European economic integration. Various countries outside the EU also use the Euro due to its stability and wide acceptance. The Euro is one of the most traded currencies in the world and serves as a reserve currency in several countries, enhancing its global significance.