The basic advantages of approaches receiving the state as a level of analysis is that they point out the differences between states by taking each state’s characteristics into consideration. These theories and models lead the researcher to regard (not disregard) the details of variables concerning the states. Taking the states to the core of research as mentioned above provides the researcher the opportunity to make concrete generalizations (not prevent them from doing so). On the other hand, in system (not state) level analysis, characteristic differences among states are neglected. Nevertheless, state level analysis sometimes overemphasizes the unnecessary details (and this in not an advantage).