Unification of China

"Qin's wars of unification" were a series of military campaigns ordered during the late 3rd century BC by the Qin state against the other six major states (Han, Zhao, Yan, Wei, Chu, Qi) in China. By the end of the wars in 221 BC, Qin had unified most of China and also conquered some lands south of the Yangtze River. The territories annexed by Qin became the homeland of the Chinese nation and formed the basis of the Qin Dynasty. 

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