4. the history of the event in the past that human beings can be taken as a lesson and application in the process of solving a problem, and the crisis is based on ethical and moral development, the peace of human society itself.
4. The history of past events that people can be a lesson. And application troubleshooting process. And crises According to the ethical, moral order, peace, and development of human society itself.
4. History is past humans can be used as a lesson. And application in process of solving problems and crises. According to the principles of ethics and morality in order to peace and development of human society.