Major climate shift possibly due to shift in solar activity. Glaciers expand, covering plants. Atmospheric temperatures fall.
Sahara changes from a habitable region into a barren desert
Ancient Egypt begins using clay, bone and ivory tags to label boxes, possibly an example of proto-writing
Indus Valley Civilization (also known as Harappan civilization or Sindu-Sarasvati civilization) begins in Harappa
c. 3300 BC, Harappan script is discovered in Indus Valley (present day Pakistan)
c. 3300 BC—Pictographs in Uruk
3300 BC to 3000 BC: Face of a woman, from Uruk (modern Warka, Iraq) is made. It is now in the Iraq Museum, Baghdad (stolen and recovered in 2003).
c. 3300 BC The Red Temple, the first phase of the Monte d'Accoddi sanctuary in Northwest Sardinia, is built.
The Bronze Age begins in the Fertile Crescent (Roux, 1980)
Cattle introduced to the Nile valley
Egyptians domesticate the wild ass of North Africa (Clutton-Brock)
c. 3250 BC – Potter's wheel in use in Ancient Near East
Ötzi the Iceman, a mummy discovered in the Austrian/Italian Alps in 1991
33rd century BC Wikipedia
The 33rd century BC is a century which lasted from the year 3300 BC to 3201 BC.