"the combination of Africa's adverse geography and its extreme poverty creates the worst poverty trap in the world.

Yet the situation in Africa is not hopeless...

disease can be controlled, crop yields can be sharply increased and basic infrastructure such as paved roads and electricity can be extended to the villages, 

a combination of investments well attuned to local needs and conditions can enable African economies to breakout of the poverty trap." 

(Jeffrey Sachs)

Sachs p208