linguistic:voice_change
Lingala is a Bantu language spoken in the northwest of the Democratic Republic of the Congo, the northern half of the Republic of the Congo, in their capitals, Kinshasa and Brazzaville, and to a lesser degree in Angola, the Central African Republic, Kenya and southern South Sudan. Lingala has 20 million native speakers and about another 20 million second-language speakers, for an approximate total of 40 million speakers.