 Historians have speculated that Genoese refugees from this engagement may have brought the Black Death to Western Europe.After the destruction of the Mongol Golden Horde army by Timur (1399), the Crimean Tatars founded an independent Crimean Khanate under Hacı I Giray, a descendant of Genghis Khan, in 1441.Hacı I Giray and his successors reigned first at Qırq Yer, and from the beginning of the 15th century, at Bakhchisaray.