|Social |The Silk Road separates China from Europe and Western Asia. It was a very dangerous route. Much of it|
| |is taken up by the Taklimakan desert, one of the most hostile environments. There is almost no |
| |vegetation, and very little rainfall. Sandstorms were very common, and killed many people. |
|Political |The western end of the trade route developed earlier than the eastern end, because of the development|
| |of the empires in the west, and the easier terrain of Persia and Syria. The Iranian empire of Persia |
| |was in control of a large area