Qin's wars of unification

Qin campaigns to conquer all of China (230–221 BC)

Qin's wars of unification (c. 230 - 221 BC) were a series of military campaigns launched in the late 3rd century BC by the state of Qin against the other six states remaining in China – Han, Zhao, Yan, Wei, Chu and Qi. Qin developed into the most powerful of China's Seven Warring States that coalesced in the wake of the declining Zhou dynasty, which had been reduced to a weak and merely ceremonial position during the Warring States period.

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