- Capital: Moroni
- Population: 921.000
- Surface: 1.861 km2
- Devise: le franc comorien
- Religion: Majorité Islam
- Appartient à: ACP, Ligue arabe, FMI, ONU, UA
- Capital: Nouakchott
- Population: 4.614.974
- Surface: 1.030.700 km2
- Devise: l’ouguiya (1 EUR=42,8600 MRO)
- Religion: Majorité Islam
- Appartient à: ACP, UMA, Ligue arabe, FMI, ONU, UA