Northwest Africa or Northwestern Africa is a variably defined region of North Africa. The term incorporates cardinal directions, and is used in various disciplines: geopolitics, archaeology, anthropology, meteoritics and genetics.

The countries and territories in Northwestern Africa include:

• Algeria
• Libya
• Morocco
• Mauritania
• Tunisia
• Western Sahara

The terms Maghreb, Barbary and Tamazgha, and in historical contexts Libya, are more or less synonymous with Northwestern Africa.

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