The Golden Horde—the Russian designation for the western part of the Mongol empire—flourished from the mid-13th century to the end of the 14th century. The name is traditionally said to derive from the golden tent of Batu, Genghis Khan’s grandson, who expanded the domain of the Golden Horde in a series of campaigns that included the sacking and burning of Kiev in 1240. At its peak, its territory included most of European Russia. The outbreak of what disease in 1346 contributed to its downfall? Discuss
Source: The Free Dictionary