The precursor to the Spanish language, Castillian was originally spoken in northeastern Spain, in the Kingdoms of Castile and Aragon during the 10th. However, after the 13th century, this Castillian dialect was adopted as the standard language of the Spanish state. Spanish, as a language based on Latin, is a member of the Romance branch of the Indo-European language family.
Spanish is in many ways a rich and mulitfarious language for even though it is primarily derived from Latin, the various peoples that lived in what is now known as Spain have influenced the language. Some of these people spoke Celtic, Greek, Hebrew, and Basque languages. Arabic has particularly influenced Spanish because of the long Muslim dominance of the southern Iberian Peninsula.