All Spanish language spoken in all countries is subject to the rules of the Royal Academy of Spanish[1] and the Association of the Academies of Spanish Language

All Spanish language spoken in all countries is subject to the rules of the Royal Academy of Spanish[1] and the Association of the Academies of Spanish Language[2]. Both institutions work together in keeping an up-to-date dictionary with terms from speakers of all parts of the world. To counter-point your claims, there are a myriad of dialects of Spanish inside Spain. Some of them even are similar to the ones used in Hispanic-America. I'm not talking about the other languages of Spain: Aragonese, Asturian, Basque, Catalan, Galician, Valencian, Extremaduran, etc. I'm only talking about the language that is official in all Spain, Spanish (and its dialects). [1] https://www.rae.es/ https://www.rae.es/ [2] https://www.asale.org/ https://www.asale.org/