Brazilian Portuguese signed into law by the President on 21 July 2008 allowing for a 6-year adaptation period, during which both orthographies co-existed. All of the CPLP countries have signed the reform. In Brazil, this reform has been in force since January 2016. Portugal and other Portuguese-speaking countries have since begun using the new orthography. Regional varieties of Brazilian Portuguese, while remaining mutually intelligible, may diverge from each other in matters such as vowel pronunciation and speech intonation. The existence of Portuguese in Brazil is a legacy of the Portuguese colonization of the Americas. The first wave of Portuguese-speaking immigrants settled in
History of the Americas considered advanced or civilized include Norte Chico, Cahokia, Zapotec, Toltec, Olmec, Maya, Aztec, Chimor, Mixtec, Moche, Mississippian, Puebloan, Totonac, Teotihuacan, Huastec people, Purépecha, Izapa, Mazatec, Muisca, and the Inca.After the voyages of Christopher Columbus in 1492, Spanish, Portuguese and later English, French and Dutch colonial expeditions arrived in the New World, conquering and settling the discovered lands, which led to a transformation of the cultural and physical landscape in the Americas. Spain colonized most of the Americas from present-day Southwestern United States, Florida and the Caribbean to the southern tip of South America. Portugal settled in what is mostly present-day