* Latin: The foundation of Spanish is Vulgar Latin, the everyday language spoken by Romans in the Iberian Peninsula.
* Indigenous languages: When the Romans conquered the Iberian Peninsula, they encountered various indigenous languages. These languages influenced Spanish vocabulary, grammar, and pronunciation.
* Arabic: During the Moorish occupation of Spain, Arabic words and grammatical structures were absorbed into the developing Spanish language.
* Castilian: Over time, various dialects emerged in different regions of Spain. The dialect spoken in Castile gained prominence and eventually became the standard language.
So, while no single person can be credited with "creating" Spanish, it's the result of a complex and fascinating historical process.