Early Modern Spanish
Early Modern Spanish (also called Classical Spanish or Golden Age Spanish, especially in literary contexts) is the variant of Spanish used between the end of the 15th century and the end of the 17th century, marked by a series of phonological and grammatical changes that transformed Old Spanish into Modern Spanish. Notable changes from Old Spanish to Early Modern Spanish include: (1) a readjustment of the sibilants (including their devoicing and changes in their place of articulation, wherein voicing remains before voiced consonants, such as mismo, desde, and rasgo, but only allophonically), (2) the phonemic merger known as yeísmo, (3) the rise of new second-person pronouns, (4) the emergence of the "se lo" construction for the sequence of third-person indirect and direct object pronouns, and (5) new restrictions on the order of clitic pronouns.