Even though that Shi Huangdi was a ruthless ruler, he still did unified China. But there were also several significant identities that further unified China. After the Qin dynasty was overthrown by the Han dynasty, under Emperor Wudi reign, who was the greatest Han Emperor, he expanded China’s territory by invading northern Vietnam and Korea, in which eventually was under his rule. A Chinese form of government ruled this invaded countries according to Confusian principles. China had became more unified when the Han dynasty achieved its period of greatest prosperity. Genghis Khan also unified tribes in Mongolia in 1206. The Yuan dynasty was established when his grandson, Kublai Khan conquered China. Its significant achievement was the unification
