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Abacus was Invented (jan 1, 2700 BC – jan 1, 2300 BC)

Description:

-A calculating tool that could do simple math
-First used by Babylonians, Chinese, and Egyptians

Added to timeline:

Python Timeline Project

13 Dec 2019

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365

Date:

jan 1, 2700 BC

jan 1, 2300 BC

~ 400 years

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