Spain officially withdrew from the territory on 27 February 1976 , and that day Polisario formally proclaimed the Sahrawi Arab Democratic Republic ( SADR ) .
In Addis Ababa later that month , Algeria worked for recognition of the Polisario Front by the Organisation of African Unity .
Spain officially withdrew from the territory on 27 February 1976 , and that day Polisario Front formally proclaimed the Sahrawi Arab Democratic Republic ( SADR ) .
In Addis Ababa later that month , Algeria worked for recognition of the Polisario Front by the Organisation of African Unity .