21st century BC
(22nd century BC - 21st century BC - 20th century BC - other centuries)(4th millennium BC - 3rd millennium BC - 2nd millennium BC)
Events:
- 2130 - 2080 BC -- Ninth Dynasty wars in Egypt
- 2112 - 2095 BC -- Sumerian campaigns of Ur-Nammu
- 2064 - 1986 BC -- Twin Dynasty wars in Egypt
- 2049 BC - Oak trees for Seahenge felled.
- 2040 BC -- End of Tenth Dynasty
- 2034 - 2004 BC -- Ur-Amorite wars
- 2004 BC -- Elamite destruction of Ur
- 2000 BC -- The town of Mantua was presumedly founded
- 2000 BC -- First written accounts of Schizophrenia.
- 2037 BC -- Emperor Shen Nong makes first (perhaps mythical) tea drink by boiling fresh leaves
