Why Alexander is called 'The Great'

'The Great' is not a title that Alexander had during his lifetime; it is an epithet, given to him after his death. The Ancient Romans, who grew in power some time after Alexander, admired his achievements and used this epithet for him. Alexander is remembered as 'Great' due to his military prowess: never losing a battle and personally leading his men. He has also been named 'The Great' for managing to keep his vast empire united, although it fragmented after his death. In founding Alexandria, which went on to become a hugely important centre of learning, he has also been seen as 'Great'.