- Capital: Monaco
- Population: 38.300
- Surface: 2 km2
- Devise: l’euro
- Religion: Majorité Christianisme
- Appartient à: CoE, ONU, OSCE
- Capital: Nouakchott
- Population: 4.403.319
- Surface: 1.030.700 km2
- Devise: l’ouguiya (1 EUR=43,2400 MRO)
- Religion: Majorité Islam
- Appartient à: ACP, UMA, Ligue arabe, FMI, ONU, UA