King Alexander III of Macedon, commonly known as Alexander the Great, was born in 356 BC and became king at the age of 20. He is renowned for creating one of the largest empires in ancient history, stretching from Greece to Egypt and into parts of India. His military genius and strategic prowess allowed him to win numerous battles against larger armies. Alexander was tutored by the philosopher Aristotle, which influenced his appreciation for culture and knowledge. He founded several cities, many named Alexandria, which became centers of learning and trade. His legacy continues to impact history, culture, and military strategy today.