(36th century BC - 35th century BC - 34th century BC - other centuries)

(5th millennium BC - 4th millennium BC - 3rd millennium BC)

Events

• ? - Formation of the Sahara Desert
• 3450 (?) - Stage IId of the Naqada culture in Egypt

Significant persons

Inventions, discoveries, introductions

• ? - Irrigation in Ancient Egypt
• ? - First cities in Egypt
• ? - First use of Cuneiform (script)