The Republic of South Africa is most suitable. In terms of GDP per capita, it is not in the first place in Africa, it is inferior to Equatorial Guinea and Gabon due to the oil specialization of the latter (small population, a lot of oil), however, its economy is more diverse. It is the leader both on the continent and in the world in the extraction of a number of resources (gold). There is not only a developed mining industry, but also mechanical engineering (the first place in Africa for the production of cars) and agriculture (they grow corn, cotton, sugar cane, cereals).
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.