
The
Morocco
Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It has coastlines on the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to Algeria–Morocc ...
–
Western Sahara
Western Sahara is a territorial dispute, disputed territory in Maghreb, North-western Africa. It has a surface area of . Approximately 30% of the territory () is controlled by the Sahrawi Arab Democratic Republic (SADR); the remaining 70% is ...
border is in length and runs from
Atlantic Ocean
The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the ...
in the west, to the tripoint with
Algeria
Algeria, officially the People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa. It is bordered to Algeria–Tunisia border, the northeast by Tunisia; to Algeria–Libya border, the east by Libya; to Alger ...
in the east. The border has existed purely in a ''
de jure
In law and government, ''de jure'' (; ; ) describes practices that are officially recognized by laws or other formal norms, regardless of whether the practice exists in reality. The phrase is often used in contrast with '' de facto'' ('from fa ...
'' sense since Morocco's
annexation of Western Sahara in 1976–1979.
Description
The border starts in the west at the Atlantic coast and consists of a single horizontal line, terminating in the east at the Algerian tripoint.
The border traverses a thinly populated section of the
Sahara desert
The Sahara (, ) is a desert spanning across North Africa. With an area of , it is the largest hot desert in the world and the list of deserts by area, third-largest desert overall, smaller only than the deserts of Antarctica and the northern Ar ...
.
History
The border emerged during the '
Scramble for Africa
The Scramble for Africa was the invasion, conquest, and colonialism, colonisation of most of Africa by seven Western European powers driven by the Second Industrial Revolution during the late 19th century and early 20th century in the era of ...
', a period of intense competition between European powers in the later 19th century for territory and influence in Africa. The process culminated in the Berlin Conference of 1884, in which the European nations concerned agreed upon their respective territorial claims and the rules of engagements going forward.
As a result of this process, Spain announced its intention to declare a protectorate over the north-west African coast between
Cape Bojador
Cape Bojador (, Arabic transliteration, trans. ''Rā's Būjādūr''; , ''Bujdur''; Spanish language, Spanish and ; ) is a headland on the west coast of Western Sahara, at 26° 07' 37"N, 14° 29' 57"W (various sources give various locations: this ...
and
Ras Nouadhibou
Ras Nouadhibou () is a peninsula or headland divided by the border between Mauritania and Western Sahara on the African coast of the Atlantic Ocean. Since colonial times, it has internationally been known as ''Cabo Blanco'' in Spanish or ''Cap ...
(Cape Blanco/Cap Blanc), which was formally created as the
Rio de Oro colony the following year.

On 27 June 1900 France and Spain signed a treaty which created a border between Rio de Oro and
French West Africa
French West Africa (, ) was a federation of eight French colonial empires#Second French colonial empire, French colonial territories in West Africa: Colonial Mauritania, Mauritania, French Senegal, Senegal, French Sudan (now Mali), French Guin ...
starting at Ras Nouadhibou and terminating at the junction of the
12th meridian west and the
26th parallel north (i.e. the bulk of the modern
Mauritania–Western Sahara border).
This boundary was then extended by a treaty of 3 October 1904 north up to what is now the tripoint with Algeria and then west along the parallel of 27°40'N, this latter line forming the modern Morocco-Western Sahara boundary; the new Spanish territory thus formed was named
Saguia el-Hamra.
Another Franco-Spanish treaty was signed on 27 November 1912 which created a French protectorate over most of Morocco, whilst ceding parts of the country to Spain viz. the Mediterranean littoral (the 'Northern Zone', or more commonly
Spanish Morocco), the exclave of
Ifni
The Territory of Ifni () was a Spanish province on the Atlantic coast of Morocco, south of Agadir and across from the Canary Islands. It had a total area of , and a population of 51,517 in 1964. The main industry was fishing. The present-day Mor ...
and the
Cape Juby
Cape Juby (, trans. ''Raʾs Juby'', ) is a cape on the coast of southern Morocco, near the border with Western Sahara, directly east of the Canary Islands.
Its surrounding area, including the cities of Tarfaya and Tan-Tan, is called the C ...
/Tarfaya Strip (aka the 'Southern Zone'), the latter forming what is now the far south of Morocco proper, between the
Draa River and the Saguia el-Hamra border at 27°40'N agreed upon in 1904.
From 1946 to 1958 Spanish Morocco, the Tarfaya Strip, Ifni, Rio de Oro and Saguia el Hamra were united as
Spanish West Africa. Morocco gained independence from France in 1956, including Spanish Morocco (minus the
plazas de soberanía
The (), meaning "strongholds of sovereignty", are a series of Spanish overseas territories scattered along the Mediterranean coast bordering Morocco, or that are closer to Africa than Europe. This term is used for those territories that have ...
which remain part of Spain today). The newly independent state, inspired by the idea of creating a '
Greater Morocco', claimed all of Spanish West Africa as Moroccan land.
In 1958 Spain merged Rio de Oro and Saguia el-Hamara in 1958 as
Spanish Sahara
Spanish Sahara (; ), officially the Spanish Possessions in the Sahara from 1884 to 1958, then Province of the Sahara between 1958 and 1976, was the name used for the modern territory of Western Sahara when it was occupied and ruled by Spain bet ...
;
that same year Spain ceded the Tarfaya Strip to Morocco (via the
Treaty of Angra de Cintra), thereby re-instating the 1904 border.
[Robert Rézette, ''The Western Sahara and the Frontiers of Morocco'' (Nouvelles Éditions Latines, 1975), p. 101.] Ifni was ceded in 1969 (following a failed Moroccan attempt to capture the region
by force in 1957).
[José Luis Villanova, "La organización política del territorio de Ifni duranta la dominación colonial española (1934–1969)", ''Anales: Revista de Estudios Ibéricos e Iberoamericanos']
3
(2007): 49–82, esp. 62–72. Morocco then turned its sights to Spanish Sahara, however Mauritania (independent since 1960) also contested the territory, claiming the former colony of Rio de Oro as part of '
Greater Mauritania'.
Saharawi nationalists had meanwhile formed the
Polisario, seeking independence for the whole of Spanish Sahara as Western Sahara, and began a low-level guerrilla campaign. An
International Court of Justice
The International Court of Justice (ICJ; , CIJ), or colloquially the World Court, is the only international court that Adjudication, adjudicates general disputes between nations, and gives advisory opinions on International law, internation ...
ruling on the matter in October 1975 stated that neither the Moroccan nor Mauritanian claims to Western Sahara were strong enough to justify annexation, and that the Saharawi people should be allowed to determine their own future.
Morocco thereafter sought to settle the matter militarily, and in November 1975 conducted the '
Green March', in which thousands of soldiers and Moroccan nationalists forcibly crossed the Morocco-Spanish Sahara border. Spain's dictator
Francisco Franco
Francisco Franco Bahamonde (born Francisco Paulino Hermenegildo Teódulo Franco Bahamonde; 4 December 1892 – 20 November 1975) was a Spanish general and dictator who led the Nationalist faction (Spanish Civil War), Nationalist forces i ...
was at this time near-death, and the country was unwilling to respond militarily at such a delicate time, keen to avoid the kind of drawn-out colonial war that had bedevilled Portugal in its African colonies. Spain therefore signed
a treaty with Morocco and Mauritania, splitting Spanish Sahara roughly in two, roughly two-thirds in Morocco's favour.
Morocco thereafter the absorbed their section into Morocco and the Morocco–Western Sahara border ''de facto'' ceased to exist, with subsequent Moroccan
administrative reorganisations ignoring the border entirely. Polisario forces declared a
Sahrawi Arab Democratic Republic
The Sahrawi Arab Democratic Republic (SADR), also known as the Sahrawi Republic and Western Sahara, is a partially recognized state in the western Maghreb, which claims the non-self-governing territory of Western Sahara, but controls only ...
based on the boundaries of Spanish Sahara, thus starting a long
war
War is an armed conflict between the armed forces of states, or between governmental forces and armed groups that are organized under a certain command structure and have the capacity to sustain military operations, or between such organi ...
against Morocco and Mauritania. Unwilling to continue the conflict, Mauritania pulled out of
their zone in 1979, which was then annexed by Morocco.

In the 1980s, in an effort to control the territory and stymie the Polisario, Morocco began building a number of elaborate walls (or 'berms'), eventually completing the
Moroccan Western Sahara Wall in 1987.
Milestones of the conflict
'', page 2. Website of the United Nations
The United Nations (UN) is the Earth, global intergovernmental organization established by the signing of the Charter of the United Nations, UN Charter on 26 June 1945 with the stated purpose of maintaining international peace and internationa ...
MINURSO mission. Morocco and Polisario signed a
ceasefire agreement in 1991 ending the war; Morocco retained control of
areas west of the wall (roughly 80% of Western Sahara), with Polisario controlling those
east
East is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth.
Etymology
As in other languages, the word is formed from the fact that ea ...
. At present the dispute remains unresolved.
References
{{DEFAULTSORT:Morocco-Western Sahara border
Borders of Morocco
Borders of Western Sahara
International borders
Disputed territories in Africa
Territorial disputes of Morocco