Some social scientists have postulated that governments are designed for the purpose of helping the powerful take resources from the less powerful. But while there have been many exploitative governments throughout history, states may have actually started to form as a means of facilitating cooperation. In a paper in the American Economic Review, authors Robert C. Allen, Mattia C. Bertazzini, and Leander Heldring found that in ancient Mesopotamia, states were more likely to form when large-scale irrigation projects were needed after losing access to a river. They argue that the pattern observed in the archeological records is best explained by small settlements banding together to cooperate through new institutions. Heldring recently spoke with Tyler Smith about the economic origins of government, the nature of archaeological evidence for ancient state formation, and parallels to modern-day institutions.

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