Force Diplomacy
Forcibly changing the diplomatic relationship between players and AI factions or between AI and AI factions.
How to use it: first click the force diplomacy button added by mod (on the right of the treasury) to enable the faction selection function, then click the settlements or characters belonging to two factions on the campaign map in turn to select factions, and then click the button again to pop up the force diplomacy panel, where you can select and click the diplomatic type you want to change.
Note: Choosing a rebel faction or choosing a ruins city has no effect.