
Originally Posted by
neondt
Your State Diplomacy (your leader's diplomacy, plus your chancellor's diplomacy, and some contribution from your spouse) determines a bonus to relations with all other characters in the game. It's very helpful. If you raise your children yourself (and you should in most circumstances), always choose event options that give them diplomacy traits. Children now get the same education type as their guardian however, so if your leader isn't a Grey Eminence (just about the best trait), Charismatic Negotiator, etc then consider having them educated by someone who is. That way you'll be able to tutor children yourself in future and be guaranteed to get a diplomacy trait when they turn 16.