"Africa was the part of the world with the institutions least able to take advantage of the opportunities made available by the Industrial Revolution. For at least the last one thousand years, outside of small pockets and during limited periods of time, Africa has lagged behind the rest of the world in terms of technology, political development, and prosperity. It is the part of the world where centralized states formed very late and very tenuously. Where they did form, they were likely as highly absolutist as the Kongo and often short lived, usually collapsing. Africa shares this trajectory of lack of state centralization with countries such as Afghanistan, Haiti, and Nepal, which have also failed to impose order over their territories and create anything resembling stability to achieve even a modicum of economic progress. Though located in very different parts of the world, Afghanistan, Haiti, and Nepal have much in common institutionally with most nations in sub-Saharan Africa, and are thus some of the poorest countries in the world today."