Along with the desire of the Catholic Monarchs to extend their dominion to all the kingdoms of the Iberian Peninsula, their reign was characterized by religious unification of the peninsula through militant Catholicism.
Xunto ao afán dos Reis Católicos de estender o seu dominio a todos os reinos da península Ibérica, o seu reinado caracterizouse pola unificación relixiosa en torno ao catolicismo.