

De jure wars on counties, as well as subjugation-type wars, vassalize or usurp the target titles.Pressing another's claim makes them your vassal if they are lower rank, and: they are your de jure vassal, or of your dynasty, or already your landed vassal.Pressing a personal claim usurps the title.Warfare is a primary way to expand your realm, as most CBs can give you new territory:
