be known as the Portuguese language and used officially. In the second period of Old Portuguese, in the 15th and 16th centuries, with the Portuguese discoveries, the language was taken to many regions of Africa, Asia, and the Americas. By the mid-16th century, Portuguese had become a lingua franca in Asia and Africa, used not only for colonial administration and trade but also for communication between local officials and Europeans of all nationalities. The Portuguese expanded across South America, across Africa to the Pacific Ocean, taking their language with them. Its spread was helped by mixed marriages between Portuguese and local people and by its association with Roman Catholic missionary efforts, which led to the formation of creole languages such as that called Kristang in many parts of Asia (from the word cristão, "Christian"). The language continued to be popular in parts of Asia until the 19th century. Some Portuguese-speaking Christian communities in India, Sri Lanka, Malaysia, and Indonesia preserved their language even after they were isolated from Portugal. The end of the Old Portuguese period was marked by the publication of the Cancioneiro Geral by Garcia de Resende, in 1516. The early times of Modern Portuguese, which spans the period from the 16th century to the present day, were characterized by an increase in the number of learned words borrowed from Classical Latin and Classical Greek because of the Renaissance (learned words borrowed from Latin also came from Renaissance Latin, the form of Latin during that time), which greatly enriched the lexicon. Most literate Portuguese speakers were also literate in Latin; and thus they easily adopted Latin words into their writing, and eventually speech, in Portuguese. Spanish author Miguel de Cervantes once called Portuguese "the sweet and gracious language", while the Brazilian poet Olavo Bilac described it as ("the last flower of Latium, naïve and beautiful"). Portuguese is also termed "the language of Camões," after Luís Vaz de Camões, one of the greatest literary figures in the Portuguese language and author of the Portuguese epic poem The Lusiads. In March 2006, the Museum of the Portuguese Language, an interactive museum about the Portuguese language, was founded in São Paulo, Brazil, the city with the greatest number of Portuguese language speakers in the world. The museum is the first of its kind in the world. In 2015 the museum was partially destroyed in a fire, but restored and reopened in