Well, if Christianity works, it may also provide a valid interpretation for why Africa has so many problems. Christians would say the occult practices of the Africans make them susceptible to evil spirits.

This interpretation works in the Amazon too. Read Spirit of the Rainforest. It is a first hand account of a shaman's induction into witchcraft and eventual conversion to Christianity. It is eye opening both for the account of the shaman's culture and the bad things Western anthropologists do over there.