Saguia el-Hamra in the context of "Sahrawi people"

The Popular Front for the Liberation of Saguia el-Hamra and Río de Oro, better known by its acronym Polisario Front, is a Sahrawi nationalist liberation movement seeking to end the occupation of Western Sahara through the means of self-determination and armed resistance.

Tracing its origin to a Sahrawi nationalist organization known as the Movement for the Liberation of Saguia el Hamra and Wadi el Dhahab, the Polisario Front was formally constituted in 1973 with the intention of launching an armed struggle against the Spanish occupation which lasted until 1975, when the Spanish decided to allow Mauritania and Morocco to partition and occupy the territory. The Polisario Front proclaimed the Sahrawi Arab Democratic Republic (SADR) on 27 February 1976, and waged a war to drive out the two armies. It forced Mauritania to relinquish its claim over Western Sahara in 1979 and continued its military campaign against Morocco until the 1991 ceasefire, pending the holding of a UN-backed referendum which has been consistently postponed ever since. In 2020 the Polisario Front declared the ceasefire over and resumed the armed conflict.

Spanish West Africa (Spanish: África Occidental Española, AOE) was a grouping of Spanish colonies along the Atlantic coast of northwest Africa. It was formed in 1946 by joining the southern zone (the Cape Juby Strip) of the Spanish protectorate in Morocco with the colonies of Ifni, Saguia el-Hamra and Río de Oro into a single administrative unit. Following the Ifni War (1957–58), Spain ceded the Cape Juby Strip to Morocco by the Treaty of Angra de Cintra, and created separate provinces for Ifni and the Sahara in 1958.

Spanish West Africa was formed by a decree of 20 July 1946. The new governor sat at Ifni. He was ex officio the delegate of the Spanish high commissioner in Morocco in the southern zone of the protectorate, to facilitate its government along the same lines as the other Spanish possessions on the coast. On 12 July 1947, Ifni and the Sahara were raised into distinct entities, but still under the authority of the governor in Ifni. On 10 and 14 January 1958, respectively, the Sahara and Ifni were raised into regular Spanish overseas provinces completely independent of one another.

Río de Oro (Spanish: [ˈri.o ðe ˈoɾo] , Spanish for "River of Gold"; Arabic: وادي الذهب, Wādī-aḏ-Ḏāhab, often transliterated as Oued Edhahab) is the southern geographic region of Western Sahara. It was, with Saguia el-Hamra, one of the two territories that formed the Spanish province of Spanish Sahara after 1958; it had been taken as a Spanish colonial possession in the late 19th century. Its name seems to come from an east–west river which was supposed to have run through it. The river was thought to have largely dried out – a wadi, as the name indicates – or have disappeared underground.

The Spanish name is derived from its previous name Rio do Ouro, given to it by its Portuguese discoverer Afonso Gonçalves Baldaia in 1436. The Portuguese prince Henry the Navigator dispatched a mission in 1435, under Gil Eanes and Baldaia, to find the legendary River of Gold in western Africa. Going down the coast, they rounded the al-Dakhla peninsula in present-day Western Sahara and emerged into an inlet, which they excitedly believed to be the mouth of the River of Gold (see Senegal River). The name continued to be used for the inlet and the surrounding area although no gold was found there, neither in the water of the narrow gulf, probably mistaken for the river itself, nor in its neighborhood. Some gold dust, however, was obtained from the natives.

The Movement for the Liberation of Saguia el-Hamra and Wadi el Dhahab, also referred to as the Liberation Movement (Arabic: حركة تحرير, romanized: Harakat Tahrir), Movement for the Liberation of the Sahara, Advanced Organization of the Sahara, or simply the Muslim Party, was a Sahrawi movement created in the late 1960s by Muhammad Bassiri, a Sahrawi journalist and teacher of Qur’an.

Its aim was the peaceful overturning of Spanish colonial rule and achievement of Western Sahara's self-determination. It initially organized and operated in secret, but revealed its existence in a demonstration in El-Aaiun (Laayoune) against Spanish rule in 1970, attempting to hand over a petition to the Spanish colonial rulers calling for better treatment and Western Sahara's independence.

The Oulad Tidrarin (Arabic: أولاد تيدرارين, romanized: Awlād Tīdrārīn) is a Sahrawi tribe of Arab origin. They speak Hassaniya Arabic. They are Muslims, belonging to the Maliki school of Sunni Islam. They live mainly in Western Sahara but also in Morocco and Mauritania.

The Oulad Tidrarin settled the Saguia el-Hamra and Río de Oro areas of Northwest Africa, their original home. Many live in the Cape Bojador and the coastline of the south of Morocco, some on the coast of Saguia el-Hamra and some branches live in the south and east of Mauritania. There are some members of the Uladsliman and Lidadsa in subgroups in Mali.

The Reguibat (Arabic: الرقيبات, romanized: Rgībāt; variously transliterated Reguibate, Rguibat, R'gaybat, R'gibat, Erguibat, Ergaybat) is a Sahrawi tribal confederation of mixed Arab and Sanhaja Berber origins. The Reguibat speak Hassaniya Arabic, and are Arab in culture. They claim descent from Sidi Ahmed al-Reguibi, an Arab Islamic preacher from Beni Hassan who settled in Saguia el-Hamra in 1503. They also believe that they are, through him, a chorfa tribe, i.e. descendants of Muhammad. They are divided into two main geographical divisions - the Reguibat as-Sahel and Reguibat ash-Sharg - who are in turn divided into sub tribes. Religiously, they belong to the Maliki school of Sunni Islam.

Their population in 1996 exceeded 100,000 people. David Hart estimated their population to number from 200,000 to 300,000 in 1962 but this could be too high. They are today the largest tribe in Western Sahara.