(a) On an outline map of Nigeria, locate and name the; 
(i) North-Central Highlands, Western Highlands, Adamawa Highlands and Udi Hills
(ii) Rivers Sokoto, Gongola, Oshun and Anambra

(b) Describe four ways in which the North-Central Highlands are of economic importance

(c) Highlight any four problems limiting the economic development of the region