I want to know the answer to the following question:
When did Cassander die?
All the background I'm provided with is that "He once again laid siege to Athens after they turned on him, but then struck a treaty with the Athenians and Ptolemy, which allowed him to cross over to Asia minor and wage war on Lysimachus' holdings in Ionia, leaving his son Antigonus Gonatas in Greece.". Is that enough to answer the question?