European Union By thanasan2018 Mar 25, 1957 The first countries Belgium, Germany, France, Italy, Luxemburg, Holland Period: Mar 25, 1957 to 1957 Creation of E.U. Period: Apr 8, 1959 to 1959 Greece's first attemp Period: 1967 to 1974 Hounda Not a democratical party (Hounda), Greece could not apply for Period: May 18, 1979 to 1979 Greece's acceptance The 12th country participating the E.U. Period: 2004 to 2004 Cyprus's acceptance Apr 22, 2018 E.U. https://europa.eu/european-union/index_en