how are some African people and nations working to improve their economic situation?

Some African people are leaving. Northern Africans are illegally boating to Europe. Several countries have destroyed their economic infrastructure by stealing (expropriating) it from the owners, then letting it run very inefficently or just plain stealing the production means. Robert Mugabe is noteworthy in this. Other countries have plunged themselves into perpetual "civil" war between factions intent on getting power for themselves, and looting the country. These civil wars use the economic infrastructure to destroy, or loot.
It is hard to find jewels of economic productivity in AFrica. The few positive examples are minor and limited in scope, in my view.