(a) Draw a sketch map of Nigeria and on it locate and name:
(i) the Niger-Benue trough
(ii) the rivers Niger and Benue
(iii) one confluence town
(iv) Bacita and Numan

(b) Describe the commercial production of sugarcane in the Niger-Benue Trough under the following headings:
(i) method of cultivation
(ii) method of harvesting
(iii) economic importance