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Topic: to 22 000 BC: Ishango Bone
The custom of using sticks in wood, bone, or stone, to denote numbers, was widely spread among the Ishango Bush people (Africa). The practice to enumerate the number of killed enemies by carvings on the own skin of the warrior was also a common practice.
Epochs: 1 2
Thank you to the contributors under CC BY-SA 4.0!
- Huylebrouck, D.: "Mathematics in (central) Africa before colonization", https://etopia.sintlucas.be/3.14/Ishango_meeting/Mathematics_Africa.pdf, 2006