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Western Sahara War begins

November 14, 1975 — November 14, 1975
< 1 day
4Parties
Overview

The Western Sahara War begins event marks the 1975 transition from Spanish colonial withdrawal and Sahrawi nationalist insurgency into a regional war involving the Polisario Front, Morocco, and Mauritania. The Green March, Spain's exit, partition arrangements, and Polisario resistance turned a decolonization question into a long-running sovereignty dispute. The event connects colonial withdrawal, self-determination claims, Moroccan territorial policy, Algerian support for Polisario, Mauritania's withdrawal from the war, refugee camps, and the later UN-backed ceasefire process. The event is best understood as a contested decolonization rupture, not merely a battlefield opening.

Related Conflicts
Participants

participant

🇩🇿Algeria
🇲🇷Mauritania
🇲🇦Morocco
Locations
Sources & References
Spanish Sahara and Decolonization Pressure
Event Context

The war grew from Spain's withdrawal and competing claims over Western Sahara's political future.

Western Sahara entered the mid-1970s as a colonial territory whose future was disputed by Spain, Morocco, Mauritania, and Sahrawi nationalists. The core question was whether decolonization would produce independence, integration, partition, or another arrangement.

The event page should treat 1975 as a decolonization crisis with military consequences.

Encyclopaedia Britannica, 2026United Nations Mission for the Referendum in Western Sahara, 2026
Green March, Withdrawal, and War
Trigger Event

Moroccan pressure, Spanish withdrawal, and Polisario resistance converted the sovereignty dispute into war.

The Green March and Spain's withdrawal altered the balance on the ground. Polisario, which had already organized against Spanish rule, shifted into war against Morocco and Mauritania after the territory's future was decided without a mutually accepted act of self-determination.

That is why the event should link diplomacy and armed conflict.

Encyclopaedia Britannica, 2026Encyclopaedia Britannica, 2026
Morocco, Mauritania, and Polisario
Conflict Evolution

The war expanded into a regional contest before Mauritania withdrew and Morocco consolidated control over much of the territory.

Polisario fought both Morocco and Mauritania, drawing support from Algeria and presenting itself as the representative of Sahrawi self-determination. Mauritania later exited the conflict, while Morocco moved to control more of the territory.

The event is therefore a useful entry point for understanding why the dispute became regional and durable.

Encyclopaedia Britannica, 2026Encyclopaedia Britannica, 2026
Ceasefire and MINURSO
Diplomatic Aftermath

The later UN process froze the war without resolving the underlying sovereignty question.

The 1991 ceasefire and creation of MINURSO moved the conflict from open war into a long diplomatic impasse centered on referendum, autonomy, recognition, and control of territory. That later process is part of the event's significance because it shows the unresolved legacy of the 1975 rupture.

A richer page should connect the start of war to the still-contested settlement framework.

United Nations Mission for the Referendum in Western Sahara, 2026Encyclopaedia Britannica, 2026
Territorial Stalemate and Diplomatic Freeze
Territorial Stalemate

The 1975 war opened a long territorial dispute that later froze into an unresolved diplomatic status quo.

The significance of the 1975 war is not only that it began an armed phase, but that it established the basic territorial dispute that still structures the conflict. The result was a durable standoff over sovereignty, legitimacy, and control that outlasted the battlefield.

The conflict thus remained historically specific, yet politically unresolved for decades.

United Nations Mission for the Referendum in Western Sahara, 2026Encyclopaedia Britannica, 2026Encyclopaedia Britannica, 2026Encyclopaedia Britannica, 2026
Source Limits
Assessment Notes

Western Sahara sources differ sharply over sovereignty, self-determination, occupation, and autonomy language.

Terminology is politically sensitive in Western Sahara. Moroccan, Polisario, Algerian, UN, and third-party sources often use different language for control, sovereignty, occupation, and autonomy.

Maintaining clear distinctions among legal status, territorial control, diplomatic recognition, and military history prevents the conflation of facts with political advocacy.

United Nations Mission for the Referendum in Western Sahara, 2026Encyclopaedia Britannica, 2026Encyclopaedia Britannica, 2026
Humanitarian and Regional Effects
Humanitarian And Regional Effects

The war produced refugee camps, cross-border politics, and a long regional dispute that outlived the initial fighting.

The conflict's effects extended beyond the battlefield. Refugee displacement, Algerian involvement, Mauritanian withdrawal, and the entrenchment of rival sovereignty claims all made the war a regional issue rather than a local insurgency.

The war created humanitarian, diplomatic, and territorial consequences that continue to shape the conflict's political dynamics today.

The conflict also constituted a population and regional-order event, altering the demographic and geopolitical landscape of the region.

Encyclopaedia Britannica, 2026Encyclopaedia Britannica, 2026United Nations Mission for the Referendum in Western Sahara, 2026
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