Roman law – within the Law Science, this legal term gives the name of the applicable Law in the Roman Empire, developed by the Romans in Ancient Rome during their ten centuries of Empire. It represented a codified book of legal principles, valid for all citizens, and began with the Twelve Tables, issued by the Roman forum and put on public places where people could read and find solution of their disputes, as well instructions how to proceed in certain situations. The Roman law was divided on “jus scriptum” (written law that arises from legislation) and “jus non scriptum” (the non-written law, which was delivered by customs and usage). It remained in practice in the Western Europe countries until the 19th century and was the source for the modern civil law in the western countries.