Sumer time line
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3500B.C. Growth of cities like Uruk
Huge mud-brick temples  
3400B.C.
3300B.C.
3200B.C. Pictographic record-keeping
3100B.C.
3000B.C. Pictographic signs write the Sumerian language
2900B.C.
2800B.C. Legendary rulers like Gilgamesh
2700B.C.
2600B.C. Royal Tombs of Ur
2500B.C. First written account of war
2400B.C. Signs become cuneiform
2300B.C. Sumerian cities united
by Sargon of  Agade (Akkad) 
2200B.C. Agade empire expands and declines
2100B.C. Ur becomes the capital of a new empire
2000B.C. Ur destroyed by Elamites
and Amorites 
1900B.C. Sumerian language spoken less
 Akkadian becomes the main spoken
and written language  
1800B.C. Hammurabi unites all the Sumerian cities
with the capital at Babylon  
1700B.C. Many Sumerian traditions continued in Babylonia.
Sumerian language no longer spoken but   
written for some religious inscriptions  
1600B.C.
1500B.C.
1400B.C.
1300B.C.
1200B.C.
1100B.C.
1000B.C.
900B.C.
800B.C.
700B.C.
600B.C.
500B.C.
400B.C.
300B.C.
200B.C.
100B.C.
0A.D.
100A.D.
200A.D.
300A.D.
400A.D.
500A.D.
600A.D.
700A.D.
800A.D.
900A.D.
1000A.D.
1100A.D.
1200A.D.
1300A.D.
1400A.D.
1500A.D.
1600A.D.
1700A.D.
1800A.D. Sumerian cities start being excavated
1900A.D. Sumerian language translated
2000A.D.