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12 jun 2400 ano antes da era comum - Abacus was invented by the Babylon.

Descrição:

It is the earliest known tool of computing.

Adicionado na linha do tempo:

CP timeline - Tiana Zhao

ByTiana Zhao
30 jan 2018

Data:

12 jun 2400 ano antes da era comum
Agora
~ 4427 years ago
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