And then in the west, you have the Golden Horde, the Shagatai Khanate, and then the Il Khanate in much of the Middle East and Persia. Now, as we go a little bit further into the 14th century, and in particular the 1330s, you might remember when we studied Europe that the bubonic plague hits. And it doesn't just hit Europe, it hits Asia. And one of the causes often given for the rapid spread is that you had relative stability formed by these khanates so that trade was able to happen. But with that trade, you also have the spread of disease. And so the bubonic plague, or the Black Death of the 1330s, in particular does damage to the Il Khanate in Persia and the Middle East. Not only the emperor, but his sons all die from the bubonic plague.