Umma (Site Name Keyword)

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Marshland of Cities: Deltaic Landscapes and the Evolution of Early Mesopotamian Civilization (2003)
DOCUMENT Citation Only Jennifer Pournelle.

Prevailing theories of the evolution of early complex societies in southern Mesopotamia presume a uniform, arid landscape transited by Tigris and Euphrates distributaries. These theories hold that it was the seventh millennium BCE introduction of irrigation technologies from the northern alluvium to the south that began the punctuated evolution of Mesopotamian irrigation schemes. In this view, irrigation-dependent agro-pastoral production was the primary stimulus to urbanization and, millennia...