It was contiguous. But as you can see from this drawing, they began to fragment into what's referred to as multiple khanates that become more and more independent in the second half of the 13th century. As we get into the 14th century, we can see that it is now fragmented into multiple, still very significant empires. In the east, you have Kublai Khan's Wan Dynasty controlling modern day Mongolia and China, reemphasizing the importance of Buddhism until they eventually get reconquered by the Ming Dynasty. In Central Asia, you have the Chagatai Khanate. In Northwest Asia and Eastern Europe, getting as far as Poland, you have the Golden Horde. And in Persia and the Caucasus, you have the Il Khanate, which you can view as a subordinate khanate but is now independent.