It was a federation of eight French colonial territories in Africa: Mauritania, Senegal, French Sudan (now Mali), French Guinea, Ivory Coast, Upper Volta (now Burkina Faso), Dahomey (now Benin) and Niger. The capital of the federation was Dakar. (14 jan 1895 ano – 21 nov 1900 ano)
Descrição:
 https://en.wikipedia.org/wiki/French_West_Africa 
Adicionado na linha do tempo:
Data:
14 jan 1895 ano
21 nov 1900 ano
 ~ 5 years and 10 months