Which of the former eastern bloc countries, now a member of the EU is the only one to have adopted the euro as its currency?
History of the euro January in the mentioned year: Slovenia (2007), Cyprus (2008), Malta (2008), Slovakia (2009), Estonia (2011), Latvia (2014), and Lithuania (2015). All new EU members having joined the bloc after the signing of the Maastricht treaty in 1992, are obliged to adopt the euro under the terms of their accession treaties. However, the last of the five economic convergence criteria which needs first to be complied with in order to qualify for euro adoption, is the exchange rate stability criterion, which requires having been an ERM-member for a minimum of two years without the presence of "severe tensions" for the currency
International status and usage of the euro those in the eurozone, do not participate in the European Central Bank or the Euro Group. Its international usage has also grown as a trading currency, acting as an economic or political alternative to using the United States dollar. Its increasing usage in this sense has led to its becoming the only significant challenger to the US dollar as the world's main reserve currency. Several European microstates outside the EU have adopted the euro as their currency. For EU sanctioning of this adoption, a monetary agreement must be concluded. Prior to the launch of the euro, agreements were reached with