Explanation

(a) Description of Nigeria Under: (i) Location: (1) Between latitudes 4°N and 14°N. (2) Between longitude,. 3"E and 15°E. 
(3) Located in the African continent. (4) Located almost at the centre of the curve made at the western part of the continent. 
(5) Almost equidistant from all corners of the continent. (6) Bordered in the north by Niger Republic. 
(7) Bordered in the northeast by Chad Republic. (8) Bordered in the west by Ben Republic. 
(9) Bordered in the east by Republic of Cameroun. (10) Bordered in the south by the Atlantic Ocean. 

(ii) Size: (1) Fourth largest country in west Africa by landmass. (2) Total area of 923.768km (3) Stretches for about 1,300km east to west.
(4) Stretches for about 1,100km north to south.
(5) N1,, populous country in Africa — over 150,000,000. (6) Occupies I/7th of the total land area of west Africa.
(7) Four times the size of Ghana, thirteen times the size of Sierra leone, eighty-six times the size of Gambia. (8) Latitudinal extent (N - S) is10°.
(9) Longitudinal extent (E - E) is 12°. (10) Marks the eastern border of west Africa

(b) Ways in which highlands are important to the economy of Nigeria: (i) Source of minerals (ii) Formation of rainfall. 
(iii) Climatic barrier. (iv) For transhumance. (v) For the practice of specialized agriculture 
(vi) Communication masts are erected on them. (vii) Tourist attraction. (viii) Source of rivers
(ix) As wind breaks. (x) Construction of hydroelectric power projects. 
(xi) Source of construction materials (xii) Moderation of climate.
 

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