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
Acts of Parliament of the United Kingdom relating to the European Communities and the European Union European Union and also gave legal effect to European Union Law (then Community law) which came into effect on 1 January 1973, the day the UK officially joined. This act incorporated the Single European Act into the 1972 Act. This act incorporated the Maastricht Treaty into the 1972 Act which created the European Union. This act incorporated the Amsterdam Treaty into the 1972 Act. This act incorporated the Nice Treaty into the 1972 Act. This act incorporated the Treaty of Lisbon into the 1972 Act. These acts also amend the 1972 Act. This act legislated for the holding of the