The European integrative experience is a unique experience, both in terms of the circumstances of its establishment, or founding member states, or integrative successes that have been achieved in a never before achieved by any economic bloc, regional or international integration in modern and contemporary history. Thus, this study focus on European integrative experience in terms of integrative successes that have been achieved, and the most important factors which helpthe memberstates of the European Integrative process to deepen their integration both horizontally and vertically, and help them in facing the current challenges and strengthen the EU's position in the international arena.