Alexander the Great was king of Macedon and conquered much of the known world by the age of 30. He was tutored by Aristotle and took over the Macedonian throne from his father Philip II in 336 BC. Alexander then went on to defeat the Persian Empire in battles like Issus and Gaugamela, seizing their vast territories and establishing his rule all the way to India. Alexander died at the young age of 32 in 323 BC in the palace in Babylon from a sudden fever.