Who was alexander the great? . a.. the persian leader who overtook the greeks and established the largest empire in europe. b.. the macedonian king who took control of the greek city-states and established an empire that stretched as far east as india. c.. the athenian leader who studied under aristotle, but thought philosophy was a useless pastime that interfered with his study of martial arts. d.. the greek warrior who hoped to conquer the entire world so he could people become as comfortable as possible.