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Difficulty: HardLocation, Position, Size, and Boundaries of Nigeria

A spatial analyst is calculating the total angular spans of Nigeria along both principal geographic axes to model its territorial dimensions. Based on Nigeria's absolute location, which of the following correctly pairs its longitudinal span (east-west) and latitudinal span (north-south) with the sovereign nation that forms its entire western boundary?

  1. Longitudinal span of 12∘12^\circ, latitudinal span of 10∘10^\circ, bounded to the west by the Republic of BeninAnswer
  2. B
    Longitudinal span of 10∘10^\circ, latitudinal span of 12∘12^\circ, bounded to the west by the Republic of Benin
  3. C
    Longitudinal span of 12∘12^\circ, latitudinal span of 10∘10^\circ, bounded to the west by the Republic of Niger
  4. D
    Longitudinal span of 10∘10^\circ, latitudinal span of 12∘12^\circ, bounded to the west by the Republic of Cameroon

Answer

Longitudinal span of 12∘12^\circ, latitudinal span of 10∘10^\circ, bounded to the west by the Republic of Benin
Nigeria lies strictly between latitudes 4∘N4^\circ\text{N} and 14∘N14^\circ\text{N} and longitudes 3∘E3^\circ\text{E} and 15∘E15^\circ\text{E}. Taking the difference between these limits yields a longitudinal extent of 12∘12^\circ (15∘−3∘15^\circ - 3^\circ) and a latitudinal extent of 10∘10^\circ (14∘−4∘14^\circ - 4^\circ). Furthermore, Nigeria's western land frontier is shared exclusively with the Republic of Benin.

Step-by-Step Solution

1
Determine Nigeria's longitudinal span
Nigeria spans from 3∘E3^\circ\text{E} to 15∘E15^\circ\text{E}, giving an east-west difference of 15∘−3∘=12∘15^\circ - 3^\circ = 12^\circ.
Calculating longitudinal breadth requires subtracting the westernmost meridian from the easternmost meridian.
2
Determine Nigeria's latitudinal span
Nigeria spans from 4∘N4^\circ\text{N} to 14∘N14^\circ\text{N}, giving a north-south difference of 14∘−4∘=10∘14^\circ - 4^\circ = 10^\circ.
Calculating latitudinal length requires subtracting the southernmost parallel of latitude from the northernmost parallel.
3
Identify the western boundary country
The Republic of Benin borders Nigeria to the west.
Nigeria is bordered by Benin to the west, Niger to the north, Chad to the northeast, and Cameroon to the east.

Key Concept

Absolute Latitudinal and Longitudinal Extents and Neighboring Political Boundaries of Nigeria
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Topics

Location, Position, Size, and Boundaries of Nigeria

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