The 20th century BC reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

20th century BC

(21st century BC - 20th century BC - 19th century BC - other centuries)

(3rd millennium BC - 2nd millennium BC - 1st millennium BC)

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Table of contents

1 Events 2 Significant persons 3 Inventions, discoveries, introductions

Events

• 2064 - 1986 BC -- Twin Dynasty wars in Egypt
• 1991 BC -- Egypt: End of Eleventh Dynasty, start of Twelfth Dynasty
• 1932 BC -- Amorite conquest of Ur
• 1913 - 1903 BC -- Egyptian-Nubian war
• 1900 BC -- Achaean invasions of Greece
• around 1900 BC -- Fall of last Sumerian dynasty

Significant persons

Inventions, discoveries, introductions

• 1950 BC -- The copper bar cubit of Nippur defines the Sumerian cubit as 51.72 cm

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