There is no known historical purpose or cause for the Trojan War. The Trojan War is a legendary Greek story that originates in Greek Epic tradition and is set in Asia Minor. The events leading to the war are based on the mythological exploits of ancient Greek heroes such as Achilles, Agamemnon, and Odysseus, and their dealings with the gods. The Trojan War also known as the Siege of Troy, is best known for being the central story in the epic poem the Iliad, written by Homer.