Legal history makes us know origins of rules and laws, such as we know the civil industry. We know the spirit and scope of the law. Those who study the history of law is the spirit of the law. And scope of law as well, knowing the spirit and scope of the law to use the law correctly. Especially when interpreting the law, literally, contrary to the spirit of the law. We must follow the conscience of law is more important than the meaning of the law as written and make us know origins of forms of government in various countries. As well as the confidence and commitment in the development of each country.