Odyssey and Iliad deal with the Troyan war and it's aftermath while Beowulf deals with heroic endeavors of the main character, Beowulf. The epic of Gilgamesh is one of the oldest epics ever and is from the Mesopotamian culture.
You know this because you have heard it enough to have memorized what it has sounded like. Hearing it enough times makes people memorize things. I hope this helps
