The Euro is the official currency of 19 of the 28 member states of the European Union. It is used to facilitate the purchase and sale of goods and services within the Eurozone, and to support international trade. In terms of investing and financial markets, the Euro is used as a reserve currency and is the second most traded currency in the world. It provides investors with a safe haven to store their wealth, while allowing them to enjoy the benefit of the high liquidity of the Eurozone markets. The Euro is also used to facilitate the purchase and sale of securities, commodities, and derivatives, and to facilitate cross-border transactions.