I want to know the answer to the following question:
What year was Seleucus killed?
All the background I'm provided with is that "Lysimachus, who had seized Macedon and Thessaly for himself, was forced into war when Seleucus invaded his territories in Asia minor and was defeated and killed in 281 BCE at the Battle of Corupedium, near Sardis.". Is that enough to answer the question?