With the establishment of the EU, the goals and policies pursued through European Communities, and the targets and policies covered by new action areas, which include Economic and Monetary Union, European Citizenship, Common Security and Foreign Policy which will be progressed gradually by European Union treaty, have started to be addressed as a whole. The identity of the EU at the global level has also experienced change. In this context, the EU represents a political structure on its own, with its institu-tions, activities and authority, which constitute a supranational structure. Of course, it is not possible to say that this process continues without any problems and disputes. However, when we look at the development process of the EU, it is seen that this change and the transformation continue in the context of the requirements and the process continues dynamically. In this context, this study includes other studies discussing the developments of the EU in different policy spaces. In these studies, it has been examined whether EU policies have an impact on national structures, practices and actors and if there is, how and under what conditions this has become clear.