From independence until the mid-1970s, Mauritania's policy on the Western Sahara vacillated as the government sought to balance its own interests against those of a more powerful Morocco. Until 1974 the Daddah government supported self-determination for the Western Sahara, to be exercised by means of a referendum, under the assumption that the Sahrawis would choose to join with Mauritania. This assumption was reasonable: there were close ethnic ties between the Sahrawis and the Maures a large number of Sahrawi nomads had migrated into Mauritania and many Maures were living in the Western Sahara. During the period from 1974 to 1975, however, after Morocco had made clear its intention of occupying the Western Sahara, Mauritania pursued policies fraught with contradictions. To please the international community, on which Mauritania depended for economic aid, Daddah continued to support policy of self-determination for the Sahrawi population. But to please the dominant Maures of Mauritania, the government reintroduced the concept of Greater Mauritania (see Glossary), asserting the country's rights over all of the Western Sahara. A third policy, acknowledging the reality of Moroccan power, called for a partition of the Western Sahara, which led Mauritania into a long and costly guerrilla war with the Polisario.

The Mauritanian campaign to annex Tiris al Gharbiyya (the southern province of the Western Sahara) did not have much support within Mauritania. Some Mauritanians favored instead the full integration of the Western Sahara, while others, who identified themselves as Sahrawi refugees, supported independence. Adamantly opposing absorption was Mauritania's southern black population, which viewed the resultant increase in the number of Maures as a threat. To the blacks, the Western Shara conflict was an Arab war.

Data as of June 1988