This formal policy co-operation which began in 1973 with the Treaty of Chagauramas to be followed in 1989 with the Grand Anse Declaration, set out the roadmap for the formal push towards the CSME. There is a particularly extensive post-World War II experience of economic integration.
Speaking as a European citizen, and not as the President of the ECB, I think that the Europeans will go on to invent in a long term prospective an entirely new type of confederation of sovereign states, which would not be a carbon copy of the United States of America.