Union of Castile and Aragon
Also called: Catholic Monarchs, Unification of Spain
Isabella I of Castile and Ferdinand II of Aragon married in 1469, and when Ferdinand became king of Aragon in 1479 the two crowns were joined, creating the Kingdom of Spain.
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Castile and Aragon, the largest Christian kingdoms of the Iberian Peninsula, drew together when Isabella and Ferdinand married at Valladolid in October 1469. Isabella became queen of Castile in 1474 and won the ensuing war of succession, and when Ferdinand inherited the crown of Aragon in 1479 the two kingdoms came under the same royal couple. Each kept its own laws and assemblies, but this is regarded as the beginning of the Kingdom of Spain.
The monarchs curbed the nobles and sought to unite the country through Catholicism. They founded the Spanish Inquisition in 1478, and in 1492 conquered Granada and sponsored Columbus’s voyage. The pope granted them the title “the Catholic Monarchs” (1496). At this time King Seongjong ruled Joseon and was refining the Gyeongguk daejeon.