The Euro is the official currency used by 19 of the 28 countries that make up the European Union. It is used by over 337 million people in Europe, making it one of the strongest and most liquid currencies in the world. It is also a major force in the world of investing and financial markets. The Euro is used for international transactions, as well as for investments in stocks, bonds, mutual funds, commodities and other securities. Investors can use the Euro to take advantage of its stability and low inflation rate, compared to other currencies. It also provides a versatile and liquid market for investors to hedge against currency risk, allowing them to take advantage of changes in exchange rates.