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The Kingdom of Castile (/ k æ ˈ s t iː l /; Spanish: Reino de Castilla, Latin: Regnum Castellae) was a large and powerful state on the Iberian Peninsula during the Middle Ages. Its name is popularly thought to come from the castles built in the region.
Castile, Spanish Castilla, traditional central region constituting more than one-quarter of the area of peninsular Spain. Castile’s northern part is called Old Castile and the southern part is called New Castile. The region formed the core of the Kingdom of Castile, under which Spain was united in the late 15th and early 16th centuries.
Although the Christians remained on the defensive in the face of Almohad power, Alfonso VIII of Castile (1158–1214) and Alfonso II of Aragon concluded a treaty in 1179 apportioning their expected conquest of Islamic Spain between them. Castile retained the right of reconquest to Andalusia and Murcia (Mursīyah), while Aragon claimed Valencia.
The Crown of Castile was a medieval polity in the Iberian Peninsula that formed in 1230 as a result of the third and definitive union of the crowns and, some decades later, the parliaments of the kingdoms of Castile and León upon the accession of the then Castilian king, Ferdinand III, to the vacant Leonese throne.
The Kingdom of Castile was one of the medieval kingdoms of the Iberian Peninsula. It began in the 9th century: it was called County of Castile and was a vassalage depending from the Kingdom of León. It was one of the kingdoms that existed before the Kingdom of Spain .
noun. a former kingdom comprising most of modern Spain: originally part of León, it became an independent kingdom in the 10th century and united with Aragon (1469), the first step in the formation of the Spanish state.
The Story and Formation of the Kingdom of Castile. Castilla, Spanish for Castile, “the land of castles” is first used in about 800 AD for a small area under the Cantabrian Mountains. Castile expanded in the 9th century but remained a collection of counties, whose rulers were nominated by the kings of Asturias and Leon.