The Western Sahara War (Arabic: حرب الصحراء الغربية‎, French: Guerre du Sahara occidental, Spanish: Guerra del Sahara Occidental) was an armed struggle between the Sahrawi indigenous Polisario Front and Morocco from 1975 to 1991 (and Mauritania from 1975 to 1979), being the most significant phase of the Western Sahara conflict. The conflict erupted after the withdrawal of Spain from the Spanish Sahara in accordance with the Madrid Accords (signed under the pressure of the Green March), by which it transferred administrative control of the territory to Morocco and Mauritania, but not sovereignty. In late 1975, the Moroccan government organized the Green March of some 350,000 Moroccan citizens, escorted by around 20,000 troops, who entered Western Sahara, trying to establish a Moroccan prese