The legal system is a written legal system is derived from Roman law. Roman law means that the law applied in the great Byzantine (Roman Empire), which consists of major legislation. Twelve Tables Roman Law (Jus Civil) foreign law and other laws of the great Roman Empire. Later, in the reign of Emperor Justinian 1 (Justinian I) lawyers in his days on drafting a codified civil law. By adhering to a tradition (Custom) as a basis and take the decision. Comments or legal interpretations of the law and jurisprudence scholars. Up legislation written as well. Emperor Justinian himself up in the Code of Canon Law called. "The law of Justinian" (Justinian Law) which codified a precedent for other countries. Later copied, imitated and applied the law as the law of his country. Most countries, especially in Europe. Make a call that the legal system. "European law