Most likely something from a book, because it had to be published first in order for the information to be released, much more reliable than the internet :)
What are you trying to ask?
Incomes declined and debt grew
Answer:
I think this is about when Europe pretty much divided up Africa for colonial rule and the main problems with that was that no African leaders attended and Africa was basically used for it's resources and people.
But for like a hail Mary you could say white supremacy and imperialism if you consider imperialism with all it's far reaching affects to be negative thing.
Explanation:
The correct answers are a , b , c ! :)