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Difficulty: MediumPopulation Distribution, Density, and Settlement Patterns in Nigeria

Despite possessing favorable environmental conditions such as extensive fertile land and moderate rainfall, large portions of the Middle Belt of Nigeria (such as parts of Niger and Benue states) exhibit relatively low population densities compared to the Kano Close-Settled Zone or the South-Eastern states. Which historical and environmental factor combination best explains this sparse population distribution?

  1. Historical slave raiding during the pre-colonial era combined with the widespread prevalence of the tsetse fly in river valleysAnswer
  2. B
    Rapid southward expansion of the Sahel desert pushing populations into coastal urban centers
  3. C
    Dominance of linear settlement patterns along transport corridors preventing rural farm formation
  4. D
    An inverted demographic dependency ratio which forces working-age populations to remain in high-density northern cities

Answer

Historical slave raiding during the pre-colonial era combined with the widespread prevalence of the tsetse fly in river valleys
The relatively low population density in parts of Nigeria's Middle Belt (Middle Niger and Benue valleys) is historically rooted in pre-colonial slave raiding which depopulated large areas between major kingdoms. Additionally, physical factors such as the historical presence of the tsetse fly (causing sleeping sickness in humans and nagana in cattle) discouraged dense rural settlement.

Step-by-Step Solution

1
Analyze the regional demographic pattern described in the question stem
Identified the Middle Belt of Nigeria as a low-to-medium density population zone located between two dense belts (North-West Kano zone and South-East/South-West zones).
Understanding spatial population distribution in Nigeria requires evaluating physical and historical influences on specific ecological zones.
2
Evaluate historical and physical factors affecting Middle Belt settlement density
Pre-colonial slave raiding created buffer zones ('shatter belts') devoid of dense populations, while vector-borne diseases like trypanosomiasis (transmitted by tsetse flies) historically deterred livestock breeding and dense rural settlement.
These combined historical and physical factors limited population growth despite good agricultural potential.
3
Select the option that correctly synthesizes these specific factors
The statement highlighting historical slave raiding and tsetse fly prevalence correctly accounts for the low density of the region.
Other options misattribute Sahelian desertification, settlement morphology, or inverted economic formulas to this specific geographic phenomenon.

Key Concept

Factors Influencing Population Density and Distribution in Nigeria
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Topics

Population Distribution, Density, and Settlement Patterns in Nigeria

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