<human>:  Why did Achilles have to be a man in Homer’s ‘The Iliad’?
<bot>: Achilles had to be a man because he was the greatest warrior in the Greek army. Homer wrote The Iliad to explain the events that led up to the Trojan War, which took place around 1200 BC. Achilles was the greatest warrior in the Greek army, and so Homer wrote The Iliad to explain why Achilles had to be a man.