The EU By Catebaldi 1951 The European Coal and Steel Community si born 1957 the European Economic Community (treaty of Rome) 1973 The first enlargement of the EU Denmark, Ireland and the United Kingdom join the European Communities 1993 Treaty of Maastricht, creation of The Eu 1993 the name Eu is adopted was born European Union 1995 Austria, Finland and Sweden join the EU 1998 The End of the Cold War 2002 the euro currency is used 2004 10 more country joined the EU 2007 Bulgaria and Romania join the EU 2012 Nobel peace prize 2020 Brexit - The UK leaves the EU