Biography of great people. Alexander the Great, born in 356 BCE, was a military prodigy who, by age 30, created one of history's largest empires spanning from Greece to India. Tutored by Aristotle, he possessed a comprehensive education. His conquests fostered Hellenistic civilization, influencing art, literature, and philosophy. Alexander founded over 20 cities, notably Alexandria. Despite his short life, his legacy as a military genius and cultural unifier endures.