33rd century BC
Encyclopedia : 3 : 33 : 33R : 33rd century BC
(34th century BC - 33rd century BC - 32nd century BC - other centuries)
(5th millennium BC - 4th millennium BC - 3rd millennium BC)
Events
- Unification of the first Ancient Egyptian state, marking the beginning of the Ancient Egyptian civilization.
- Ancient Egypt begin using clay, bone & ivory tags to label boxes. This is possibly the oldest writing in existence.
- 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.
- Indus Valley civilization (also known as Harappan civilization or Sindu-Sarasvati civilization) began in Harappa
Significant persons
Inventions, discoveries, introductions
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