There are three major bodies of water between Troy and Ithaca. What are they and why are they so important to the Greeks?

The Aegean Sea is the body of water between Troy and Ithaca, and it is important to the Greeks because it is where Greek civilization first began. The Ionian Sea is to the west of the Aegean Sea, and it is important to the Greeks because it was the site of the Trojan War. The Mediterranean Sea is to the south of the Aegean Sea, and it is important to the Greeks because it is the sea that links the Greek world to the rest of the world.