Alexander III of Macedon, commonly known as Alexander the Great, was a king of the ancient Greek kingdom of Macedonia. . He succeeded his father Philip II to the throne in 336 BC at the age of 20 and spent most of his reign waging a military campaign spanning West Asia, Central Asia, and parts of South Asia. and Egypt. By the age of 30, he had created one of the largest empires in history, stretching from Greece to northwest India. He was undefeated in battle and is considered by many to be