The history of the Tang dynasty

Tang dynasty was the most prosperous dynasty in the history of China. In the Tang dynasty, the country was wealth and the border was safe. After Li Shiming wiped out the Huns in the north, the Tang empire destroyed their last threaten. Trading become normal and there were lots of the foreign merchants from the Middle East and Southeast Asia trading with the Tang.And Chang An, which was the captital of Tang was the largest city in the world.