The development of the power of the European Economic Community has given rise to a reaction from those interests which are most directly affected. In order to make sure both that they are informed and that their interests are represented and defended, the various groups concerned have been led to create for themselves new structures at the level of EEC. A parallel relation has thus emerged between the official powers of EEC and the private powers affected by it. These groups, formed on the European level, naturally have neither the solidity nor the effectiveness of professional representation on the national level. Moreover, since such groups are themselves a part of the process of evolution of the political structure, they adapt themselves readily to new political circumstances. But if these European professional organs are not comparable to the national groupings, they cannot be seen as similar to the international associations. They are more numerous – three hundred and fifty to four hundred gravitate towards the European Community. Their action is both more intense and more concrete than that of the international associations, and corresponds to questions with which the community is concerned.