History of the euro adopting the currency on that date. In 2013 Latvia gained the support of the European Commission, Central Bank and Parliament for accession on 1 January 2014 with Latvia adopting the currency on that date. On 23 July 2014 Lithuania became the last Baltic state to gain permission to join the euro, which was adopted on 1 January 2015. The chart below provides a full summary of all applying exchange-rate regimes for EU members, since the European Monetary System with its Exchange Rate Mechanism and the related new common currency ECU was born on 13 March 1979. The euro replaced the
World currency to the United States dollar. However, as the United States has the world's largest economy, most international transactions continue to be conducted with the United States dollar, and it has remained the "de facto" world currency. According to Robert Gilpin in "Global Political Economy: Understanding the International Economic Order" (2001): "Somewhere between 40 and 60 percent of international financial transactions are denominated in dollars. For decades the dollar has also been the world's principal reserve currency; in 1996, the dollar accounted for approximately two-thirds of the world's foreign exchange reserves", as compared to about one-quarter held in euros (see Reserve