How do border disputes work? Paradox Interactive Forumīorder Dispute. I allow interfaith marriages as well - actually thought that was standard. I usually lower education costs, allow interfaith marriages and make fabricating claims faster if I'm a minor lord. And when you get them, use them effectively by annexing the right states. You should be engineering the possibility of border disputes (very low relations and a common border) in order to generate the needed random events. Taking land away from civilized countries is generally very expensive.