1,770 B.C. to 400 B.C.
Hammurabi writes down 282 laws prescribing civil behavior in the kingdom of Babylon.
The library at Thebes in ancient Greece gathers the world's knowledge and makes it available in one place.
The Turin papyrus is the first known topographic map.
Lydia, in modern-day Turkey, introduces gold and silver coins to represent monetary value.
Babylonians invent mathematical calculation as a way to track the movement of planets.
Hippocrates [pictured] identifies causes of human diseases. Panini creates a grammar for Sanskrit, forming the basis for systematic linguistics.
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