This article argues for the potential of sociolinguistic methods to write post-colonial African history using a case study of the Mobutu regime’s use of Lingala as its language of power (langue du pouvoir) in order to rule Congo-Zaire. Oral history interviews conducted in DRC from 2019 to 2021, corroborated by sociolinguistic and political science analyses from the period under study, reveal how the Mobutu regime’s use of Lingala contributed to the privatization of the Zairian state, and the fracturing of Zairian society, but also the strengthening of Zairian and later Congolese national identity.
