In the book "Insurgent" by Veronica Roth, the following conclusion is reached:
Tris Prior, the protagonist, joins forces with the factions of Amity and Candor to oppose the Erudite faction, led by Jeanine Matthews. They plan to protect the citizens of the city and uncover the secrets behind the city's founding and the nature of the Divergent faction.
Meanwhile, Tris and Tobias (Four) develop feelings for each other, and they begin to understand the nature of their own Divergence and the risks it carries.
As the tensions escalate, Tris and the other factions engage in various conflicts with Jeanine's forces. During one confrontation, Tris is captured and subjected to memory simulations by Jeanine, who wants to access the secret information within Tris's memories.
However, with the help of Tobias and their friends, Tris manages to escape and rally the factions together. They discover that Jeanine's real goal is to unleash a genetic serum on the city, eliminating the Divergents and making the remaining population docile and controlled.
In a climactic battle, Tris and the other Divergents team up with Marcus Eaton, the leader of Amity faction, to confront Jeanine and stop the serum from being released. They are successful, and Jeanine is defeated.
As a result of the conflict, the city is in chaos, and the factions begin to crumble. Tris and Four work to rebuild the city and create a more peaceful and united society, where people can live without the constraints and divisions of the factions.
In the end, Tris sacrifices her life to save the people she loves and the city she calls home. Her actions ultimately lead to the realization that the only way to achieve true peace is to dismantle the faction system entirely.