the EU By francescam. 1951 The European Coal and Steel Community Mar 25, 1957 The European Economic Community 1973 Denmark, Ireland and the UK joined the EU 1986 Spain Portugal joined th EU Nov 9, 1989 Fall of the Berlin Wall 1992 Single market in the EU 1993 Treaty of Maastricht 1995 Austria, Sweden, Finland joined the EU 2002 Euro 2004 Malta, Cyprus and 8 countries from central and eastern Europe joined the EU Dec 13, 2007 Treaty of Lisbon 2009 Eurozone crisis 2012 Nobel Peace Prize 2013 Croatia joined the EU Jun 23, 2016 Brexit Referendum Jan 31, 2020 Brexit