The Euro is the official currency of the European Union and is used by 19 of its member states. It is one of the most liquid and widely-traded currencies in the world. Investors use the Euro for international investments, trading in stocks, commodities, and currencies. It is also used for hedging against currency fluctuations. It is an attractive investment due to its low cost and its stability. The Euro is also used as an international reserve currency, providing a safe haven for investors during times of economic uncertainty. As such, it is a popular choice for investors who are looking to diversify their portfolios.