Answer: sumer

AnswerCrossword Clue
SUMERAncient Mideast land
SUMERSouthern region of Mesopotamia
SUMERRegion of Mesopotamia
SUMERUr was one of its cities
SUMERAncient civilization
SUMERAncient region in present-day Iraq
SUMERDivision of ancient Babylonia
SUMERDivision of Babylonia
SUMERBirthplace of cuneiform writing
SUMERSo-called "cradle of civilization"
SUMERLocale of ancient Ur
SUMERLand ruled by Sargon
SUMERUr's locale
SUMERAncient Euphrates region
SUMERAncient Babylonian region
SUMERIraq, many regime changes ago
SUMERSouthern Babylonia.
SUMERSeason, old style.
SUMER"... Is Icumen In."
SUMERAncient Mideast region
SUMERAncient Mesopotamian kingdom
SUMERAncient region on the Euphrates
SUMERRegion of Ur and Lagash
SUMERRegion of ancient Mesopotamia
SUMERRegion of Babylonia
SUMEROld Mesopotamian kingdom
SUMERZiggurat-building realm
SUMERUr's land
SUMERAncient Tigris-Euphrates region