Body: People who study "Spanish language" investigate Romance language that originated in the Castile region of Spain and today has hundreds of millions of native speakers in the Americas and Spain.
Some subfields in "Spanish language" include Phonology, Geographical distribution, Spanish speakers by country.
describe part of the Ibero-Romance group of languages, which evolved from several dialects of Vulgar Latin in Iberia after the collapse of the Western Roman Empire in the 5th century is some of the cause to investigate "Spanish language".
Angela Morales, Susana Braylan, David Pharies are some authorities of "Spanish language".