Baby Paris was left in the wilderness and the bear took the baby to keep him safe that night.
The next morning when Agelaus returned to get Paris he saw him alive and safe. So the he knew that he had to keep him and raise the kid. And walked him home.
Paris could not resist but took Aphrodite's offer. He handed Eris' golden apple to her. And when he raided the house of Kind Menelaus and stole Helen to Troy, he received Aphrodite's gift of Helen's love.
King Menelaus first discovered his Queen was gone and called upon her former suitors.
The land of Troy would be destroyed if they did not find Helen and return her to Sparta.
It was all because of eris and that golden apple that led to the Trojan war.