 The spread of Apurinã speakers to different regions was initially caused by conflict or disease, which has consequently led natives to lose the ability to speak the language for lack of practice and also because of interactions with other communities.Also, as a consequence of violence and oppression towards indigenous people, some natives and descendants choose to not identify themselves as indigenous, further reducing the number of people categorized as speaking the language (Facundes 23, 2000).The low transmission and cultivation of the language result in the risk of endangerment.