This book has multiple chapters that talk about Africa, but basically it’s the history of endless extractive institutions that has led to the current state. But hey if you wanna say it’s because economics is racist go for it. Lol.
https://moderndiplomacy.eu/category/business/economy/
you might enjoy following this site to read up on articles.
This book may also be of interest to you in your area
tip for ya brah, if you smoke and listen to the audible version, it is a very great way to learn.
I suggest reading Why nations fail: https://www.amazon.com/Why-Nations-Fail-audiobook/dp/B007MIXOEC/
Spoiler: economic development has fuckall to do with border policy.