c. 1,900 BCE
Science
Mesopotamia
Plimpton 322 and Babylonian triples
A clay tablet lists Pythagorean triples a millennium before Pythagoras.
Why it mattered
Shows advanced number theory embedded in practical surveying.
Bronze Age
1,900 BCE
1 recorded milestone at this point in the record.
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Nearby in the record
c. 2,000 BCEWarfare
Spoked wheel and chariot
Central Asia
c. 2,000 BCEArt & Culture
Enheduanna, the first named author
Mesopotamia
c. 1,800 BCEScience
Babylonian mathematics
Babylonia
1,754 BCESociety
Code of Hammurabi
Babylonia
1,650 BCEScience
Rhind Mathematical Papyrus
Egypt
c. 1,600 BCECommunication
Alphabetic writing
Sinai and Levant