Respuesta :
A major problem in the former colonized countries in Africa when they left was the issue relating to the borders of the countries.
Option A is correct.
What was colonization?
Colonization was the activity of being controlled by either one people or a king which takes all the decisions and people have no right to question or reject them. It was mostly exercised by the Western nations in the Africa.
In Africa, the colonizers were not having any knowledge and understanding about how to manage a country and its affairs. They left the countries without describing about how to emerge in trading activities ,that is, the buying and selling of goods and services. This is the reason of deterioration of economic structure of Africa.
Therefore, the problems mentioned in option B to D are incorrect and only option A is correct.
Learn more about the colonization in the related link:
https://brainly.com/question/12880222
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