Divine intervention is required by Homer so that he can tell the story as it happened.
We can arrive at this answer because:
"Iliad" is the epic written by Homer, where he speaks introduces the hero Odysseus and his importance as a great leader and warrior.
At the beginning of the story, Homer asks the gods to help him tell the story.
That's because the gods interfere with the story all the time, which allows the plot to develop and many events to take place.
An example of this can be seen when the goddess Athena interferes in the relationship between Achilles and Agamemnon.
This is because Athens wanted the Achaeans to win the battle against the Trojans. She knew that Achilles' irritability would make him attack Agamemnon and that would be very disadvantageous. For that reason, she kept Achilles from getting angry.
When writing an essay like this, I would devote one paragraph to talking about how supply and demand dictate prices, and another paragraph to how international trade fuels economic growth.
