!!!Did you know this about Mauritania? Did you know that Mauritania is very low in ranking among 193 countries in the following 4 respects. #Arable Land - %: 0.44 (Rank 185). #Hospital bed density - beds/1,000 population: 0.4 (Rank 181). #Internet hosts - : 22.0 (Rank 183). #Population density - : 3.41 (Rank 185).