We finally make it to the Tang Dynasty and their Protectorate to Pacify the West.  Their adventures out in Xinjiang lasted off and on for about a hundred and fifty years.  In this episode, I'll try and sort out the major events and players who made up this high point in the Silk Road trade.  The history in Xinjiang was dominated by Tang China, various Turkic tribes, and a very powerful and warlike Tibetan Empire.