Final answer:
Phillip II, the King of Macedon, was assassinated in 336 BCE. His son Alexander the Great succeeded him.
Step-by-step explanation:
Phillip II, the King of Macedon, was assassinated in 336 BCE. He was murdered by one of his bodyguards, likely ordered by his estranged wife Olympias, who also ordered the murder of his other wife and children. His son Alexander the Great succeeded him and ascended to the throne at the age of twenty.