Question: Which countries adopted the Euro?
Answer: Belgium, Benelux, Adélie Land, Luhansk People's Republic, Luxembourg, List of Cypriot billionaires by net worth, Monaco, Monastic Republic of Mount Athos, Montenegro, Mount Athos, Serbia and Montenegro, Estonia, European Single Market, European Union, Basque Country (greater region), Cyprus, List of Greeks by net worth, Nordic Council, Nordic Council of Ministers, Nordic countries, Andorra, Germany, Latvia, Tromelin Island, Tyrol, Kingdom of Wallachia, San Marino, Vatican City, Lithuania, Gay and Lesbian Kingdom of the Coral Sea Islands, France, French Fifth Republic, Frugal Four, Greece, Republic of Ireland, Third Hellenic Republic, Third Portuguese Republic, Îles des Saintes, Austria, Kingdom of the Netherlands, Kosovo, Malta, Netherlands, Portugal, Principality of Seborga, Central European Free Trade Agreement, Single Euro Payments Area, Slovakia, Slovenia, Spain, Special member state territories and the European Union, Finland, Kerguelen Islands, Organisation of Eastern Caribbean States, Overseas France, Passports in Europe, Twente, Republic of Saugeais, Akrotiri and Dhekelia, Åland Islands, SaarLorLux, Saint Barthélemy, French Southern and Antarctic Lands, Italy