Uruk period
The Uruk period (c. 4000 to 3100 BC; also known as Protoliterate period) existed from the protohistoric Chalcolithic to Early Bronze Age period in the history of Mesopotamia, after the Ubaid period and before the Jemdet Nasr period.[1] Named after the Sumerian city of Uruk, this period saw the emergence of urban life in Mesopotamia and the Sumerian civilization.[2] The late Uruk period (34th to 32nd centuries) saw the gradual emergence of the cuneiform script and corresponds to the Early Bronze Age; it has also been described as the "Protoliterate period".[3][4]
Geographical range
It was during this period that pottery painting declined as copper started to become popular, along with cylinder seals.[5]
End of the Uruk period[edit]
Near the end of the 4th millennium, small settlements in the Uruk heartland were abandoned whilst the urban center increased in size. The Eanna precinct also underwent restructuring. Meanwhile, Uruk's influence declined in the northern Mesopotamia, the rest of Syria and Iran.[152]
Some blame the collapse on the Piora Oscillation, which was characterized by decreased temperatures and increased rainfall[153] [152].Others blame it on the intrusion of East Semitic tribes.[154]
Regardless, Uruk's legacy was preserved through the development of cuneiform, which improved on Uruk writing systems, and the popularization of myths such as the Epic of Gilgamesh[152] and the Great Flood.[153]