Spanish is a Romance language originally from the northern area of Spain. From there, its use gradually spread inside the Kingdom of Castile, where it evolved and eventually became the principal language of the government and trade. It was later taken to Africa, the Americas and Asia Pacific in the last five centuries by Spanish explorers and colonists.
Today, it is one of the official languages of Spain, most Latin American countries, and Equatorial Guinea. In total, 21 nations use Spanish as their primary language. Spanish is also one of six official languages of the United Nations.