Round 7: Tossup 5

Note to moderator: Read the answerline carefully. Historical name required. This region’s ruler Tekish deposed the last Seljuk sultan. The sack of this region’s then-largest city of Gurganj redirected its main river into the Uzboy. The destruction of this region’s Afrighid capital, Kath, was described by its native historian, al-Biruni. This region’s last Anushtegin ruler was Jalal ad-Din, who lost the Battle of the Indus; his father, nicknamed the “second Alexander,” had died after fleeing to a Caspian island. A khanate whose endonym referred to this region was based at Itchan Kala, the center of Khiva. The mathematician who authored the Al-Jabr is named for this region centered on the Amu Darya delta. (10[1])An empire named for this region was invaded after Mohammed II ordered the murder of a caravan and ensuing emissary. For 10 points, what region names the empire whose defeat completed Genghis Khan’s conquest of Central Asia? ■END■

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