Helen was the prettiest and the whole town wanted to marry her. One lucky man got to marry her and his name is Menelaus but than Paris kidnapped Helen away causing the Trojan war. Then, the Greek army messenger snatched Odysseus' son so he could join the army to help get Helen away from Paris.
Menelaus Wife Was Abducted By Paris.
Achilles known as a brave and greatest warrior, his mother told him "you could be free from tears now" and "you shall not long endure". No divinity had told Hector. They both fought and for nine years neither was able to get their advantage and that's when the quarrel between Agamemnon and Achille began.
Agamemnon and Achilles's quarrel
Achilles' mother was so angry she told him he has nothing to do with the Greeks she then went up to heaven to ask for help from Zeus.
The war reached the Olympus "cause of Achilles' mother.
Aphrodite, Athena, and Hera took Paris side. The rest took the Trojan side.