But the finding of 34 bodies in the Sahara Desert has highlighted the role of Niger as a key transit point for West Africans journeying from their home countries with dreams of settling in Europe.

The map, from Exploring Africa, has colour-coded each language into the seven families, which include Afro-Asiatic, Nilo-Saharan, Khosian, Niger-Congo / Congo-Kordofanian, Creole, Austronesian ...