After all these exceptions had been made, and the persons to whom they applied had been dismissed, the rest of the population were sold into slavery, and then the city was utterly and entirely destroyed. The number thus sold was about thirty thousand, and six thousand had been killed in the assault and storming of the city. Thus Thebes was made a ruin and a desolation, and it remained so, a monument of Alexander's terrible energy and decision, for twenty years.