The answer is China.
the abacus is made by the Egyptian in Egypt.
Mesopotamia
actient china
actient china
China invented the abacus .
The abacus first appeared around the period 2700-2300 BC in Sumeria.
China invented the Abacus.
The Chinese are probably the first , but the Romans made them maybe 100 years later.
The Chinese abacus
"Answer"The abacus was created 3000Bc ago by the chinese.
The abacus was not invented by a Filipino; it was first recorded, well before that area was even properly settled, in many ancient civilisations earlier than 500 BCE, and in Mesopotamia before 2000 BCE. The abacus was likely introduced to the country by traders some time after the 13th century.
abacus Casio made the first graphing calculator in 1985.