3rd millennium BC
(4th millennium BC – 3rd millennium BC – 2nd millennium BC – other millennia)
Events:
- Foundation of the city of Mari (Syria) (29th century BC )
- Creation of the Kingdom of Elam (Iraq)
- Germination of the Bristlecone pine tree "Methuselah" about 2700 BC, the oldest tree still living now
- Dynasty of Lagash in Sumerians
- Golden age of Ur in Mesopotamia. (2474–2398 BC)
- First dynasty of Babylon
- Babylon conquers Sumeria and Elam
- Third and Fourth dynasties in Egypt.
- Unified Indus Valley Civilisation (2600 BC)
- Indo-Europeans first invade Greece (23rd century BC)
- Completion of first phase of Stonehenge monument in England
- Completion of the Great Pyramid of Giza
- Major migration of Central Saharans into West Africa
- Ur-nina king of Lagash (29th century BC)
- Urukagina king of Lagash. great reformer, creates the first known judicial code. (24th century BC)
- Lugalsaggizi king of Uruk and Umma. Conquers Lagash (2371–2347 BC)
- Sargon the Great, founder of the empire of Akkad and Sumeria (2371–2316 BC}
- Ur-Nammu founder of the 3th dynasty of Ur (2112–2095 BC)
- Pottery developed in Americas (30th century BC)
- Domestication of the horse in Central Asia
- Chinese record a comet
- Building of the Great Pyramid of Giza (26th century BC)
- Sails used on ships (20th century BC)
- First ziggurats built in Sumeria
- Near East civilizations enter Bronze Age around 3000 BC
- 30th century BC
- 29th century BC
- 28th century BC
- 27th century BC
- 26th century BC
- 25th century BC
- 24th century BC
- 23rd century BC
- 22nd century BC
- 21st century BC