The starting point for the article is given by the Enrique Baron Crespo's afirmation: In speeding the continental history we must respond through accelerating the communitarian history. So any future extension for the European Union is an opportunity as well a risk taken, because any problem that will affect one economy will bring also troubles for the other members. But for the European Union trese was not a precedent from which to lear so its entire future will be unique as well and it will try to solve one problem after another, succeding all.