Languages of Burkina Faso are also recognized as national languages. This has caused consternation with speakers of the other languages, who have protested it as an injustice. The country's name was taken from words in two of the most widely spoken languages, with ‘Burkina’ meaning ‘men of integrity’ in Mossi and ‘Faso’ meaning ‘father’s house’ in Dyula. Fulfulde is the lingua franca in many parts of Burkina Faso. It is widely spoken in the north and east of the country as a first language, with 8.36 percent of the population able to speak it. Dyula is also a lingua franca and is widely used
Volta–Congo languages suggested before by Bennet (1983 as cited in Williamson and Blench 2000:17) in the case of the Gur and Adamawa–Ubangi languages, which apart from Ubangian are now linked together as Savannas. Other branches are Kru, Senufo, Kwa, and Benue–Congo, which includes the well-known and particularly numerous Bantu group. The relationship of Kwa to Benue–Congo (named "Benue–Kwa"), and the eastern and western branches of Benue–Congo to each other, remain obscure. The vowel systems of Volta–Congo languages have been the subject of much historical comparative linguistic debate. Casali (1995) defends the hypothesis that the proto-Volta–Congo language originally had a nine- or ten-vowel