Why was Alexander the Great able to create one of the largest states in the world?

Why was Alexander the Great able to create one of the largest states in the world? what do you think about the role of this person in history?

The largest state in the world was created by waging a large number of wars of conquest. These wars turned out to be successful, because even under Philip II, a strong, numerous army was created (at the expense of 20 years of campaigns). Also, the Macedonian had the talent of a commander, due to which he was able to rationally distribute the forces of his army. So he was characterized by ruthlessness, which manifested itself in relation to rivals.