Central and Eastern Europe Soviet Union; the independent states in former Yugoslavia (which were not considered part of the Eastern bloc); and the three Baltic states – Estonia, Latvia, Lithuania (which chose not to join the CIS with the other 12 former republics of the USSR). The CEE countries are further subdivided by their accession status to the European Union (EU): the eight first-wave accession countries that joined the EU on 1 May 2004 (Estonia, Latvia, Lithuania, Czech Republic, Slovakia, Poland, Hungary, and Slovenia), the two second-wave accession countries that joined on 1 January 2007 (Romania and Bulgaria) and the third-wave accession country that
History of the European Union (1993–2004) to 25 members, the largest single expansion in its history. Its population jumped from 381 million to 456 million and its size grew from 3367 to 4104 thousand km² (See Enlargement Statistics). The 10 countries also brought with them 162 MEPs and 10 Commissioners, who joined the Prodi Commission on 1 May. History of the European Union (1993–2004) The history of the European Union between 1993 and 2004 was the period between its creation (replacing the European Economic Community) and the 2004 enlargement. The European Union was created at the dawn of the post–Cold War era and saw a series