The fourfold classification of human societies into bands, tribes, chiefdoms, and states owes much to two books by Elman Service: Primitive Social Organization (New York: Random House, 1962) and Origins of the State and Civilization (New York: Norton, 1975). | Jared Diamond | Guns, Germs, and Steel

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The fourfold classification of human societies into bands, tribes, chiefdoms, and states owes much to two books by Elman Service: Primitive Social Organization (New York: Random House, 1962) and Origins of the State and Civilization (New York: Norton, 1975).

-- Jared Diamond