The Euro is the official currency of the Eurozone, which is a monetary union of 19 of the 28 member states of the European Union. It is used by financial markets and investors to facilitate cross-border payments, investments, and trading. The Euro is an important global currency, and its value and liquidity are essential for international trade. It is also a major reserve currency, held by central banks around the world. As a result, the Euro is used for international investments and for hedging against currency fluctuations. The Euro's stability and strength make it an attractive option for investors seeking to diversify their portfolios.