Uruk, was an ancient city of Sumer situated east of the present bed of the Euphrates River
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Ancient Near East - The City-State
The Uruk period existed from the protohistoric Chalcolithic to Early Bronze Age period in the history of Mesopotamia, following the Ubaid period and succeeded by the Jemdet Nasr period. Named after the Sumerian city of Uruk, this period saw the emergence of urban life in Mesopotamia. It was followed by the Sumerian civilization. The late Uruk period saw the gradual emergence of the cuneiform script and corresponds to the Early Bronze Age; it may also be called the Protoliterate period. It was during this period that pottery painting declined as copper started to become popular, along with cylinder seals.