Timeline Sumeria  Return to home  Eliki:
http://www.eliki.com/ancient/civilizations/sumerian/ Emayzine:
http://www.emayzine.com/lectures/sumeria.htm Flick:
http://www.flick.com/onomastikon/Ancient-
World/Eastern/Sumeria.htm Peterson:
http://www.coco.cc.az.us/~apeterse/_ART201/sumeria.htm Pre-
History:
http://www.roanoke.infi.net/~gunther/mideast/sumeria.html UWGB:
http://www.uwgb.edu/galta/mrr/SUMERIA/ Yahoo links:  3,500BC   
Sumerians and Babylonians use sexigesimal (base 60) number
system according to historian Eric Temple Bell.  3,450       
The first cities appeared along the banks of the Tigris and
Euphrates just north of what is now the Persian Gulf. The cities
made up the Uruk culture named after the principal city of Uruk,
which corresponds to the Biblical Erech. The culture invented
writing, the lunar calendar, used metal and built monumental
architecture. The cities remained independent for almost a
thousand years.     (eawc, p.1)  3,300        Around this time
the inhabitants of Sumer in present day