Volga Muslims variously claim that either Socrates or this ruler were the ancestors of the Kipchak chieftain Bachman Khan. In the Epic of Sundiata, this ruler is referred to as “a king of gold and silver” and Sundiata is most commonly compared to him. The Epic of Sundiata also claims that descendants of this man founded the Cissé dynasty, which founded the Ghana Empire. (-5[1])This ruler legendarily built the Caspian (*) Gates to keep out Gog (10[1])and Magog, (10[3])a tale (10[1])related (10[1])in the Quran, (10[1])in which this ruler (10[1])is referred to as Dhū (10[1])al-Qarnayn. The subject of a “romance” written by Pseudo-Callisthenes, a young Chandragupta Maurya (10[1])supposedly met this ruler at Taxila (10[1])during his conquest of Punjab. (10[3])For 10 points, name this ruler mythologized across three continents after his conquest of the Achaemenid (-5[1])Empire. ■END■ (10[1])