Libetrarian class theory was first described by Rothbard, i…

Libetrarian class theory was first described by Rothbard, inspired by Oppenheimer, a Marxist. Oppenheimer's theory was a historical one, which proposed that modern states developed out of two ethnically different classes of people: agriculturalists that became the lower class, and pastoralists who invaded and applied their herding skills to became the upper class. Historical examples can be seen in the Norman (vikings who lived in Brittany) conquest of Great Britain and in the ancient Greek civilization, which resulted from the descendants of the raiders of Troy invading and enslaving the descendants of the people who created the Minoan civilization.