Along with Ruthenians, these people would have been elevated to create a commonwealth of three nations in the unsuccessful Treaty of Hadiach (“HAHD-yutch”). A group of these people legendarily referred to Sultan Mehmed IV as “an attendant of Lucifer” in an insulting letter (10[1])known as (10[1])their “reply.” (-5[1])An ataman (10[1])of these people (-5[1])sacked Kazan during a rebellion that occurred during Catherine the Great’s reign. Yemelyan Pugachev (“ye-MEAL-yan POO-ga-chev”) and Ivan Mazepa were leaders of these people, who lived (-5[1])in groups called hosts and chiefly lived near the Dnieper (10[1])and Don rivers. For 10 points, name these militaristic, nomadic horsemen that lived in Ukraine and Russia. (10[1])■END■ (0[1])