I would like to start off by saying good luck. Anyways, Alexander the Great was in fact not the "King of Greece" not a good one anyways. Alexander's mistreatment of soldiers and extreme narcissism makes him a very bad leader. Alexander was a good strategist and general among the ones at the time. Alexander the Great was on the other responsible for the deaths of 10s of thousands of innocent people.
The people that died by his hands were the people that threatened Greece. He was in fact the King of Greece. If you look at Greek history, it clearly says that he was the King of Greece. Born and raised in the Pella Region of the Greek Kingdom of Macedon. It even says in the Bible that he was the King of Greece.