Following the Jihad launched by Ousman dan Fodio, Sharif of Sokoto in 1804, the Fulani, formerly subjugated to local populations in the Fombina, transformed into fanatical warriors driven by a genuine will to power and domination. After the conquest of vast territories, traditional political entities called lamidats were established under the command of laamiibé. A new spatial and cultural cartography thus emerged in this part of the country with its multiple ethnic groups having different cultures. Drawing from tradition, the Fulbe reproduced a viable political and administrative organization inspired simultaneously by pastoral tradition, Muslim custom, and the jurisdiction of local populations. Thus, was born the Faada, a true assembly of notables who assist the laamiido in managing the affairs of his territory. This command institution, with its heterogeneous composition, results from a historical compromise sealed between the Islamo-Fulani and representatives of conquered populations, whose objective is to ensure participatory management of the territory’s affairs. This work addresses the problem of difficult coexistence between ethnic groups in Cameroon in general and in Northern Cameroon in particular. How does the Faada of the Ngaoundéré lamidat serve as an instrument of social cohesion, integration, multiculturalism, and peaceful coexistence? This work is a historical and conceptual analysis of this appropriate institution of lamidats in general and Ngaoundéré in particular, which, given its composition and functioning, proves to be a genuine springboard not only for social integration but also for multiculturalism and peaceful coexistence. For its realization, we used oral and written sources, in a methodological approach combining field investigations for oral testimonies and documentary research. It emerges that the Wollarbe who founded the Ngaoundéré lamidat descend from Vaja, who claims Oukba as common ancestor. The Faada, an appropriate governance institution, involves in its organization and functioning the kambari notables, allies of the Fulani, but also representatives of ethnic groups from conquered territories called matchoubé, enabling genuine social, multicultural coexistence for harmonious living together