The Euro is the official currency of the European Union, and is used by 19 of the 28 member states. It is the single most traded currency in the world, and is seen as a reliable and stable investment. The Euro is especially attractive to investors because of its large liquidity and low transaction costs. It is also a popular choice for financial markets as it has a low-risk rate of return, and is more stable than other currencies. The Euro is viewed as a safe haven for investors, and is seen as a reliable and stable form of investment.