On the map above , somalia is located at letter , and sudan is located at letter

Somalia is located at letter D. and Sudan is located at letter A.
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The answer is c, i, iii, and iv. this is because farming and mining deal with harvesting raw materials, construction work falls under manufacturing, and piloting a plane is a service. ii is wrong because making bread is using  raw materials to produce goods, which would fall under the secondary sector, not primary.

Largely uneconomic because they provide little profit or food surplusi think so