Han
The abacus was supposedly invented by a guy called Xu Yueh during the bronze age... say 3000BC, nobody knows exactly. Hope this helps.
Most likely Han, but it was used most in the Ming.
paper was invented during the Tang dynasty
China invented the abacus .
Yuan Dynasty.
The gunpowder was invented at Tang Dynasty, not the Jin Dynasty
Tang dynasty
The abacus was invented to help people calculate.
the Chinese invented the abacus
abacus was not invented by chinese, but by babylonians.
The Han dynasty. Hope it helps.
China invented the Abacus.