For nearly a century, the Mongols had exploited their mutual material interests to overcome the political fault lines dividing them. Even while sacrificing political unity, they had maintained a unified cultural and commercial empire. With the onslaught of plague, the center could not hold, and the complex system collapsed. The Mongol Empire depended on the quick and constant movement of people, goods, and information throughout its massive empire. Without those connections, there was no empire.
