Marius-Gabriel Cazemajou (10 December 1864 – 5 May 1898) was a French officer who died during an expedition in West Africa.
[2] The slaver Rabih az-Zubayr had conquered the Bornu Empire, and France feared a threat to its borders in West and Equatorial Africa.
[4] The reporter Félix Dubois, an experienced traveler in West Africa, accompanied the expedition.
The Sultan Amadou Kouran Daga sent messengers to inform the French that he only recognized the Ottoman Empire.
[9] France responded to the murder of Cazemajou, and in 1899 invaded the sultanate of Zinder and defeated and killed Amadou Kouran Daga at Roumji on 13 September 1899.