While 1 January 1993 did not see entry into force of the Treaty on Euro pean Union, it did usher in the Single European Market thirty-five years after activation of the Treaty of Rome and twenty years after Denmark, Ireland and the United Kingdom joined the Community. ###>unique européen, trente-cinq ans après la mise en oeuvre du Traité de Rome, vingt ans après l'adhésion du Da nemark, de l'Irlande et du Royaume-Uni.