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Difficulty: HardTransportation, Trade, and Economic Groupings in Africa

The Trans-Saharan Highway (TAH 2) is a vital trans-African transport corridor designed to facilitate intra-African trade between North Africa and West Africa across the Sahara Desert. Arrange the following key urban nodes and transit hubs along this highway corridor in geographical sequence from North to South:

  1. 1Algiers
  2. 2Tamanrasset
  3. 3Agadez
  4. 4Kano
  5. 5Lagos

Answer

The correct geographical sequence from North to South along the Trans-Saharan Highway (TAH 2) is Algiers, Tamanrasset, Agadez, Kano, and Lagos.
The Trans-Saharan Highway (TAH 2) connects Mediterranean North Africa directly to Atlantic West Africa. The geographical progression from North to South begins at Algiers on the Mediterranean coast of Algeria (36.7∘N36.7^\circ\text{N}), moves inland through Tamanrasset in southern Algeria (22.8∘N22.8^\circ\text{N}), crosses into Niger at Agadez (17.0∘N17.0^\circ\text{N}), proceeds into northern Nigeria at Kano (12.0∘N12.0^\circ\text{N}), and ends at Lagos on the Atlantic coast (6.5∘N6.5^\circ\text{N}).

Step-by-Step Solution

1
Identify the northernmost coastal terminus of the highway corridor.
Algiers (Algeria) situated at approximately 36.7∘N36.7^\circ\text{N} on the Mediterranean Sea.
The corridor originates on the North African coast of the Mediterranean.
2
Trace the highway southward through the Algerian Saharan interior.
Tamanrasset (Algeria) situated at approximately 22.8∘N22.8^\circ\text{N}.
Tamanrasset is the main urban hub in the Ahaggar region of southern Algeria before reaching the border.
3
Follow the corridor across the international border into northern/central Niger.
Agadez (Niger) situated at approximately 17.0∘N17.0^\circ\text{N}.
Agadez links northern Saharan trade routes to the West African Sahel region.
4
Trace the route south into the savanna zone of West Africa.
Kano (Nigeria) situated at approximately 12.0∘N12.0^\circ\text{N}.
Kano is a major historic trade center connecting trans-Saharan commerce to the West African forest and coastal zones.
5
Identify the southern Atlantic port terminus of the corridor.
Lagos (Nigeria) situated at approximately 6.5∘N6.5^\circ\text{N}.
Lagos serves as the southern maritime industrial outlet on the Atlantic Ocean.

Key Concept

Trans-African Highway Network Corridors and Spatial Trade Connectivity
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Topics

Transportation, Trade, and Economic Groupings in Africa

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