The Sumerians were the first known people to settle in Mesopotamia over 7,000 years ago, between the Tigris and Euphrates rivers (modern day Iraq). Sumer was often called the cradle of civilization. By the 4th millennium BC, it had established an advanced system writing, spectacular arts and architecture, astronomy and mathematics. The origin of the Sumerians remains a mystery till this day.
Cradle of Civilization. Çatal Höyük (çatal is Turkish for “fork”, höyük for “mound”) was a very large Neolithic and Chalcolithic settlement in southern Anatolia, which existed from approximately 7500 B.C. to 5700 B.C. It is the largest and best-preserved Neolithic site found to date.
Abrupt climate change may have rocked the cradle of civilization: Effects of climate on human societies