Two answers required. One of these two powers constructed “the Beauteous Fortress” during a campaign in which Marshal de Boucicaut (“boo-see-COH”) aided the other. One of these empires tried to form an alliance with the Ilkhanate ruler Mahmud Ghazan (-5[1])to fight the other after the Battle of Bapheus. (10[1])Fighting between these two empires (10[1]-5[1])destroyed the Hexamilion (-5[1])wall. (10[2])During an incident between these two empires, (-5[1])one of them (10[1])refused to follow John Kantakouzenos’s (10[1])orders (10[2])by continuing (10[1])to settle Gallipoli. (10[3]-5[2])An emperor (10[1])supposedly (-5[2])turned to marble (10[1])after (10[1])a siege (10[2])between these (10[1])two (10[1])empires (10[3])that caused (10[2])the fall (10[1])of the Paleologos (10[1])dynasty. (10[4]-5[1])For (10[1])10 (10[1])points, (10[1]-5[1])what two (10[1])empires (10[2])fought each other during the 1453 (10[4])siege (10[1])of (10[2])Constantinople? (10[6])■END■ (10[11]0[2])