Grammars and dictionaries of indigenous languages were composed throughout the colonial period, but their quality was highest in the initial period. The friars found that learning all the indigenous languages was impossible in practice, so they concentrated on Nahuatl. For a time, the linguistic situation in Mesoamerica remained relatively stable, but in 1696, Charles II of Spain issued a decree banning the use of any language other than Spanish throughout the Spanish Empire. In 1770, another decree, calling for the elimination of the indigenous languages, did away with Classical Nahuatl as a literary language. Until Mexican Independence in 1821, the Spanish courts admitted Nahuatl testimony and documentation as evidence in lawsuits, with court translators rendering it in Spanish.