How did the Tang Dynasty reunify china?

Li Xiaogong, a royal family member of Tang Dynasty, and Li Jing, who later became the God of War during Tang Dynasty, led a troop and conquered Xiao Xian's short-lived empire in the south. Du Fuwei, another powerful warlord who defeated Li Zitong and Li Shihong earlier, surrendered to Tang. read more

Li Yuan named himself the emperor of the new Tang Dynasty and started trying to reunify China, along with his son Li Shimin. With the help of the warlord Du Fuwei, who unified the very important Yangtze River region, the Tang managed to unify China, but not before Li Shimin forced his father off the throne and became Emperor Taizong. read more

Before Tang, China was pervaded by a spirit of cultural tolerance; the time of disorder following the collapse of the Han Dynasty Sui dynasty Roles were similar of the Qin, Sui rulers were too ambitious, created foundation for Tang. read more