drawn into the sphere of influence of the more powerful Castile. About 50 years after the Compromise, with the marriage of Ferdinand I's grandson Ferdinand II to Queen Isabella of Castile, Aragon became the junior partner in a dynastic union that would become the modern Spanish state. See also La fi del comte d'Urgell, a treatise in support of the dynastic line through Count James of Urgell. Sources Bibliography 1410s in law 1412 in Europe 15th century in Aragon Crown of Aragon Principality of Catalonia Military history of Catalonia History of the Valencian Community Political compromises in Spain