Also this year Antonio de Nebrija published his Grammatica, the first book ever devoted to the study of a Romance language. The first Spanish Grammar was published in Salamanca, though it was written in Latin. First book ever published in Spanish had been printed in Segovia in 1472.
After their marriage, Catholic Monarchs Ferdinand and Isabella put a lot of effort into the unification of their two kingdoms, Castile and Aragon. They wanted their new country to be politically, religiously and linguistically unified. This meant the language of Castile was widely imposed and its use greatly encouraged to the detriment of other languages. Their dominion was not only extended all over the Peninsula (with the exception of Portugal and Navarre), but after 1492 also over part of the Americas.
Due to the great extension of Spanish Empire, Spanish became the diplomatic language in Europe, America and part of Asia (Philippines, Guam, Mariana Islands and Caroline Islands). Up until the XVIII century, Spanish grammars and dictionaries were published all over Europe, as Spanish was the language of international politics.
that gave birth to authors such as Fernando de Rojas (La Celestina, 1499), Garcilaso de la Vega, Bartolomé de Las Casas, Bernal Díaz del Castillo, the unkown author of El Lazarillo de Tormes (1554), Félix Lope de Vega (1562-1635, one of the most prolific authors of universal
literature), mystics Juan de la Cruz and Teresa de Jesús, Fray Luis de León, Miguel de Cervantes (Don Quijote de La Mancha, 1605-1615 -considered by many the most emblematic work of Spanish literature, it is one of the
most-published books of all time), poets Luis de Góngora and Francisco de Quevedo (La vida del Buscón, 1626), and playwrights Tirso de Molina and Pedro Calderón de la Barca (La vida es sueño, 1635).