I'd appreciate if somebody could tell me if I understand the Diplomatic Vassalisation option correctly:
A.) So Diplo-vassalisation can first of all only be "offered" to countries of the same religion group as one's own, right?
B.) And if that country (or yourself) cannot engage in royal marriages (RM) (because of government style for example), then diplo-vassalling is not possible, right?
Thanks a lot in advance!