This section is written about what the research has come from the study documents the theory and related research, including theory, principles and facts. The concept of expert The research works Related to the issue of research. Including a roadmap for conducting a joint study with the research. Sort by topic or story written by the variables studied. Each topic is arranged chronologically with the story. So that the reader has seen development. About the problem In addition, the research should be finalized as well. So that the reader has seen the most consistent relationship conflict, and have not studied the issue in terms of time, place, method, education, etc.. This part provides a benefit to the hypothesis.