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Difficulty: HardLocation, Size, and Political Divisions of Africa

Which of the following landlocked African nations is traversed by both the Prime Meridian (0∘0^\circ longitude) and the Tropic of Cancer (23.5∘N23.5^\circ\text{N})?

  1. MaliAnswer
  2. B
    Niger
  3. C
    Burkina Faso
  4. D
    Chad

Answer

Mali is the landlocked African nation traversed by both the Prime Meridian (0∘0^\circ longitude) and the Tropic of Cancer (23.5∘N23.5^\circ\text{N}).
Mali is both landlocked and geographically positioned such that the Prime Meridian (0∘0^\circ longitude) cuts through its eastern region near Gao, while the Tropic of Cancer (23.5∘N23.5^\circ\text{N}) crosses its northern desert territory near Taoudenni.

Step-by-Step Solution

1
Identify the African countries crossed by the Prime Meridian (0∘0^\circ longitude).
The Prime Meridian passes through Algeria, Mali, Burkina Faso, Togo, and Ghana.
Establishing the longitudinal alignment eliminates countries lying entirely east or west of 0∘0^\circ.
2
Identify the African countries crossed by the Tropic of Cancer (23.5∘N23.5^\circ\text{N}).
The Tropic of Cancer passes through Western Sahara, Mauritania, Mali, Algeria, Niger, Libya, and Egypt.
Establishing the latitudinal alignment filters out nations located too far north or south of 23.5∘N23.5^\circ\text{N}.
3
Determine the intersection set of both geographical grid lines among landlocked nations.
The countries crossed by both lines are Algeria and Mali. Among these, Mali is a landlocked sovereign state.
Comparing both list requirements satisfies all spatial criteria of the question.

Key Concept

Spatial grid alignment and political geography of African nations
Estimated Time:2m 0s
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Topics

Location, Size, and Political Divisions of Africa

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