Geography

seasonal changes

varrying duration of sunshine hours

unequal solar radiation on the earth's surface

night and day

the tropics

1 and 2

2 and 5

3 and 4

1 and 5

2 and 3

relationship with former colonial rulers

production of similar goods

deliberate government policies in recent times

competition among the nations in Africa

frequent changes in government of different countries

the soil is not productive

the population is sparse

there are insect pests and disease carriers

mineral resources can be found there

none of the above

Lokoja-Ajaokuta

Lagos-Ikeja

Port harcourt-Aba

Kaduna-Zaria

Abeokuta-Ibadan