Many of these structures were built around the same time, the 3rd millennium BC.
During the middle of the third millennium BCE, Sumerian deities became more anthropocentric and were "...nature gods transformed into city gods."
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Nevertheless some of these beads are already found in chalcolithic contexts (site of La Pastora) which has brought some to speculate on an earlier date for the introduction of this material in southeast Iberia (late 3rd millennium BC).
While pottery finds indicate that the site of Sippar was in use as early as the Uruk period, substantial occupation occurred only in the Early Dynastic period of the 3rd millennium BC, the Old Babylonian period of the