-
Original signatories of the 1957 Treaty of Rome.
Belgium
France
Germany
Italy
Luxembourg
Netherlands -
Introduction of new countries
Denmark
Ireland
United Kingdom -
Greece’s accession consolidated democracy in the country.
Greece -
This enlargement consolidated democracy in Portugal and Spain.
Portugal
Spain -
Introduction of new countries
Austria
Finland
Sweden -
Aimed at reuniting the continent after the fall of the Berlin Wall
Cyprus
Czech Republic
Estonia
Hungary
Latvia
Lithuania
Malta
Poland
Slovakia
Slovenia -
The pace of reform in Bulgaria and Romania
Bulgaria
Romania -
The accession negotiations with Croatia
Croatia
