Answer:
1) It's the name of a country in West Africa:
MAURITANIE
2) It's one of the names of the capital of Benin:
HOGBONOU
3) It's the ceremony that reunites 40.000 spectators:
OUVERTURE
4) It's a city in Cote d'Ivoire:
ABIDJAN
5) It's often criticized by Tiken Jah Fakoly in his music:
GOUVERNANTS