Sumer time line - Mesopotamia - The British Museum
3500B.C. Growth of cities like Uruk Huge mud-brick temples 3400B.C. 3300B.C. 3200B.C. Pictographicrecord-keeping 3100B.C. 3000B.C. Pictographic signs write the Sumerianlanguage 2900B.C. 2800B.C. Legendary rulers like Gilgamesh 2700B.C. 2600B.C....