I see a lot of people in the forums talking about expanding by "forcing personal unions". Could you explain the sequence of mechanics that one carries out to execute this?
Also, when I have a negative prestige change for "Uncontested Claims", does that refer to provinces with my core that I don't own, or something else?
Also, when I have a negative prestige change for "Uncontested Claims", does that refer to provinces with my core that I don't own, or something else?