"I suppose the qualifier "some" would help explain why Haiti remains such a hell hole."
It is a rough environment there.
I read Jared Diamond's book Collapse a while back, and it gave me some insights. Good book, EZ to read, and informative. I am certain that there are better resources, but this particular book is OK for most readers I would say. The Haiti problems are just a part of the subject matter.
Diamond is interesting but revisionist PC.