How did the Trojan War end?

It is clear that the Trojan War didn't end on the battlefield, i.e. in front of the city wall after the fight between Achilles and Hector. The end of the Iliad is not the end of the war. Homer didn't tell the story of the entire war, only "the fury of Achilles, the son of Peleus". The fight between Achilles and Hector, even if it is the peak point of the Iliad, is not the turning point of the war itself.

The war didn't end with the merciless battles on the dusty savanna between the defense walls of the lower city and the Skamandros River. Victory and defeat happened in the minds of the people. The end of the war was prepared when Odysseus from the Achaeans decided to build a horse as a gift and put the best soldiers inside. When the Trojans didn't listen to the warnings of Cassandra and Laokoon against taking this so-called gift-horse to their home as a present. In other words, the main characters of the war are not Hector and Achilles, but Odysseus and Cassandra. Hector and Achilles fight with the weapons, but Odysseus and Cassandra fight with words, concepts and ideas. The Achaeans won the the war, because the ideas of Odysseus worked. Troy collapsed because Cassandra, although she tried her best, couldn't convince the Trojans. For the Trojans, the gift is a gift and the weapon is a weapon, nothing else. For the gods, they participated in this trick and decide to destroy Troy. Trojans couldn't resist the merciless and unjust decisions and magnificient Troy collapsed.