The Euro is the official currency of the European Union and is used by 19 of its member states. It is one of the world's major currencies and is used for investing and trading in financial markets. The Euro is traded on international foreign exchange markets and is used for transactions such as purchasing stocks, bonds, commodities, and other financial instruments. It is also used to make payments in international transactions, giving investors access to the European markets. The value of the Euro is affected by economic and political events, making it an important instrument for investors to monitor.