Following the Death of the King of Castille-Aragon, It is discovered that the King had no son and that all possible heirs either don't exist or are dead, this causes a state of internal chaos as essentially an entire monarchical line is dead, this causes multiple royal family's to claim to be the legitimate ruler of Castille-Aragon resulting in National Schizophrenia.
Thanks to @newniue for the original project ROYAL LEGITIMACY RANKING: Plantagenets (England Royals) 45% (Imperialistic, Anti-Mamluk) Counts of Holland (Netherlands) 35% (Imperialistic, Strong Economy) House of Folkungar (Sweden) 10% (Unclear Policy) Afonsine Dynasty (Portugal) 20% (Supported by Regionalists)