Castilian was eventually carried to the Americas in the 16th century by the conquistadors.
From the en.wikipedia.org
Castilian and Catalan experiences are very different, though.
From the economist.com
Castilian monarchs showed a predilection for the center of the peninsula, with abundant forests and game.
From the en.wikipedia.org
Castilian is what best shows the differences.
From the economist.com
Castilian is both a dialectal variation of Spanish and an alternative name for the Spanish language as a whole.
From the en.wikipedia.org
To check the abuse of power of royal officials, two ancient castilian institutions were brought to the Philippines.
From the en.wikipedia.org
Castilian legitimists, who valued the succession of the closest heir of the king over the continuation of Habsburg rule, supported the king's plan.
From the en.wikipedia.org
Castilian Spanish is an umbrella term referring to all of the various regional dialects of European Spanish spoken in south-central, central, north-central and northern Spain.
From the en.wikipedia.org
Castilian Spanish came to the area later, in the 14th century, when the central administration sent emissaries and functionaries to occupy political and ecclesiastical offices.
From the en.wikipedia.org
More examples
The Spanish language as spoken in Castile
(castile) a region of central Spain; a former kingdom that comprised most of modern Spain and united with Aragon to form Spain in 1479
Castilians (Spanish: castellanos) are certain inhabitants in regions of central Spain including at least the eastern part of Castile and Leu00F3n, the northern and eastern parts of Castile-La Mancha, and the Madrid community, who are the source of the Spanish language (Castilian) among other aspects of cultural identity...
(Castile (historical region)) A former kingdom, Castile gradually merged with its neighbors to become the Crown of Castile and later the Kingdom of Spain with the Crown of Aragon and the Kingdom of Navarre. ...
A native of Castile; of Castile; The main and official language of Spain, Peru, Colombia, Chile, Argentina, Ecuador, Mexico, etc
(Castile) A medieval kingdom (or county) in the Iberian Peninsula; A vaguely defined region of central Spain
(Castile) Originally referred to soap made with olive oil and lye. Now refers to any mild soap.
(Castile) Along with Aragon, a regional kingdom of the Iberian peninsula; pressed reconquest of peninsula from Muslims; developed a vigorous military and religious agenda. (p. 507)
(Castile) Central region in Spain, where modern Spanish state and language originated.