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the abacus is made by the Egyptian in Egypt.
The abacus has been around for millennia, in various countries. No record of the inventor was made.
It was made in 1815
Originally in China.
For a calculater
The abacus first appeared around the period 2700-2300 BC in Sumeria.
actient china
The Chinese abacus.
The answer is China.
actient china
the chinese and they made the wheel barrow
They are made of bamboo and beans or stones.