The legal system is the principal legal systems of the world, there are four major systems together. Is 1. Legal Civil law (Civil Law) or the legal system of writing. Origin of the Roman Empire This is the nature of the legal system as well as the conservative Odds case law or legislation or new. The record is written and neatly organized into categories. This is called the Code Originally, there was no point in writing. Elites who ruled the Roman aristocracy is a call to write the law as written. The elite know that is ruled by law. The legal system also has developed steadily continued to the present. In Thailand, the law Civil law is such an example. Civil and Commercial Code Criminal etc.