The currency of the Eurozone is the Euro (€). It was introduced in 1999 as an electronic currency and began circulating as physical banknotes and coins in 2002. The Euro is used by 19 of the 27 European Union member countries, collectively known as the Eurozone, including Germany, France, Italy, and Spain. This currency facilitates easier trade and travel within the Eurozone and aims to promote economic stability among its member states. The European Central Bank is responsible for managing the Euro, ensuring the stability of prices, and regulating monetary policy in the Eurozone.