A system of law governing relations between and among states existed as back as in the times of Hittites, roughly 1650 BCE, and there were the Draconian and other laws of the Hellenes in the west, the laws of Solon, some Greek laws intended for strictly local use but others governing relations among the Greek city-states. International trade and boundary issues led to the employment of international law throughout Africa, both north and south of the Sahara. Much
of modern international law is based on concepts that were established during the Roman Empire. The answer is B.