Taizong (birth name, Li-Shimin, l. 598-649 CE, r. 626-649 CE) was the second emperor of the Tang Dynasty and is considered one of the greatest rulers in Chinese history for his reforms of the government and the laws, his religious tolerance, and the prosperity China enjoyed under his reign.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Emperor_Taizong_of_Tang/.