Answer:
The Trojan War.
Step-by-step explanation:
The Trojan War is one of the most important events in Greek mythology. It recounts the story of the war against the city of Troy undertaken by the Greeks after, so the myth goes in the Iliad, Paris took Helena from the King of Sparta. The war is said to have taken 10 years, after which Troy was defeated and the city was taken. After the war, Odysseus, one of the main heroes in the battle, made his way back home, which took him another ten long years, as Homer recounts the myth in the Odyssey.