The basis of most WESTERN law systems is Common Law.
One of the Roman Empire's most enduring legacies was the body of Roman Law, which became the basis for almost all later law systems in Western Europe.
The Torah, together with its ancient commentary (the Talmud) is the basis of Israelite law.
International law began during the renaissance in Europe. International law is not universal, however, because although many western countries enacted international law, many East Asian countries still believed in the supremacy of the emperor.
Western Law School was created in 1959.
California Western School of Law was created in 1924.
Western Sierra Law School was created in 1979.
The common term for having no law, or legal basis, is "anarchy".
The Greeks.
greek
Greek
Islamic law was the basis of the laws of the Ottoman Empire.