<P> The date of accession , 1 January 2007 , was set at the Thessaloniki Summit in 2003 and confirmed in Brussels on 18 June 2004 . Bulgaria , Romania and the EU - 25 signed the Treaty of Accession on 25 April 2005 at Luxembourg 's Neumuenster Abbey . </P>
<P> The date of accession , 1 January 2007 , was set at the Thessaloniki Summit in 2003 and confirmed in Brussels on 18 June 2004 . Bulgaria , Romania and the EU - 25 signed the Treaty of Accession on 25 April 2005 at Luxembourg 's Neumuenster Abbey . </P>
when did romania become part of the eu
when did romania become part of the eu
1 January 2007
1 January 2007