For ten points, name this son of Phillip II, a king of Macedonia who conquered the entirety of the Persian Empire and a student of Aristotle's known as "The Great."
After he was proclaimed king, this ruler executed a number of his potential rivals, including his cousin Amyntas IV and one of his father's generals, Attalus. This man helped his father at Chaeronea, but is better known for his victories at Hydaspes, (*) Issus, and Guagamala against Darius III. For ten points, name this son of Phillip II, a king of Macedonia who conquered the entirety of the Persian Empire and a student of Aristotle's known as "The Great."
After he was proclaimed king, this ruler executed a number of his potential rivals, including his cousin Amyntas IV and one of his father's generals, Attalus.
{Alexander the Great} or {Alexander III} of Macedon (prompt on just {Alexander} before “The Great” is mentioned)