The economic development of the Member States has been one of the main purposes of the European integration process since its beginning in the Fifties: it was explicitly expressed in the Schuman’s declaration of 9th May 19501 , and it was formally reaffirmed in the ECSC Treaty:2 through the pooling of coal and steel production, the common foundations for an economic development finalized at the preservation of peace would be created, building a de facto solidarity among Countries