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Sumerian Abacus (1 jan 2700 ano antes da era comum – 1 jan 2300 ano antes da era comum)

Descrição:

During this time period the first abacus use was seen with the Sumerians

Adicionado na linha do tempo:

Educational Technology Timeline

ByIan Fisher
17 out 2018
0
0
377

Data:

1 jan 2700 ano antes da era comum
1 jan 2300 ano antes da era comum
~ 400 years
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