Virtually all Mauritanians are SunniMuslims. They adhere to the Maliki rite, one of the four Sunni schools of law. Since independence in 1960, Mauritania has been an Islamic republic. The Constitutional Charter of 1985 declares Islam the state religion and sharia the law of the land.
Islam first spread southward into West Africa, including Mauritania, with the movement of Muslim traders and craftsmen and later with the founders of Islamic brotherhoods. Although the brotherhoods (Sufism and tariqa) played a role in the early expansion of Islam, it was not until the nineteenth century that these religious orders assumed importance when they attempted to make religion a force for expanding identities and loyalties beyond the limits of kinship. The relative peace brought to the area by French administration and the growing resentment of colonial rule contributed to the rapid rise in the power and influence of the brotherhoods. In recent decades, these orders have opposed tribalism and have been an indispensable element in the growth of nationalist sentiment.
In the 1980s, two brotherhoods (tariqa), the Qadiriya and the Tijaniya, accounted for nearly all the brotherhood membership in Mauritania. The Qadiriya and Tijaniya were essentially parallel "ways," differing primarily in their methods of reciting the litanies. Their Islamic doctrines and their religious obligations were basically similar. Two smaller brotherhoods also existed-- the Chadeliya, centered in Boumdeït in Tagant Region, and the Goudfiya, found in the regions of Tagant, Adrar, Hodh ech Chargui, and Hodh el Gharbi.
As Islam spread westward and southward in Africa, various elements of indigenous religious systems became absorbed into and then altered strictly Islamic beliefs. For example, the Islamic tradition includes provisions for a variety of spirits and supernatural beings, as long as Allah is still recognized as the only God. Muslims in Mauritania believe in various lesser spirits apparently transformed from pre-Islamic faiths into Islamic spirits. Mauritanian Muslims, however, do not emphasize the Islamic concepts of the eternal soul and of reward or punishment in an afterlife.
At the core of Islam is the Quran, believed to be the final revelation by a transcendent Allah [Arab.,=the God] to Muhammad, the Prophet of Islam; since the Divine Word was revealed in Arabic, this language is used in Islamic religious practice worldwide.
Islam views the Message of Muhammad as the continuation and the fulfillment of a lineage of Prophecy that includes figures from the Hebrew Scriptures and the New Testament, notably Adam, Noah, Abraham, Moses, David, and Jesus.
In Islam, religion and social membership are inseparable: the ruler of the community (caliph; see caliphate) has both a religious and a political status.
Its coast faces the Atlantic Ocean on the west, with Senegal on the south-west, Mali on the east and south-east, Algeria on the north-east, and the Moroccan-annexed territory of Western Sahara on the north-west.
From the 3rd to 7th centuries, the migration of Berber tribes from North Africa displaced the Bafours, the original inhabitants of present-day Mauritania and the ancestors of the Soninke.
Mauritania and Madagascar are the only two countries in the world not to use decimal-based currency.