33rd century BC

Events

Major climate shift possibly due to shift in solar activity. Glaciers expand, covering plants. Atmospheric temperatures fall to lowest levels.
Sahara changes from a habitable region into a barren desert.
Unification of the first Ancient Egyptian state, marking the beginning of the Ancient Egyptian civilization.
Ancient Egypt begins using clay, bone and ivory tags to label boxes. This is possibly the oldest writing in existence.
Indus Valley Civilization (also known as Harappan civilization or Sindu-Sarasvati civilization) began in Harappa.
c. 3300 BC — Pictographs in Uruk.
3300 BC – 3000 BC; Face of a woman, from Uruk (modern Warka, Iraq) is made. It is now in Iraq Museum, Baghdad (stolen and recovered 2003).
3300 BC – 3000 BC; Carved vase, called the Uruk Vase, from Uruk (modern Warka, Iraq) is made. It is now in Iraq Museum, Baghdad (stolen 2003 and returned).