// todo need optimize like in event.jsp. Add indexing or not indexing this page. Chinese invent abacus for mathematical calculations. (2 abr 570 ano – 16 jul 570 ano) (Linha do tempo)
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Chinese invent abacus for mathematical calculations. (2 abr 570 ano – 16 jul 570 ano)

Adicionado na linha do tempo:

Major World Events

Bycole bennett
16 out 2018

Data:

2 abr 570 ano
16 jul 570 ano
~ 3 months and 15 days
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