The deep roots of inequality

To an economist, a map of southern Peru has a peculiar appearance. If you draw a line forming a kind of jagged oval, outlining a chunk of the Andes running from northwest to southeast, you have enclosed a region of relative poverty lying among areas of greater wealth. Yet there is no readily apparent explanation for this disparity; the well-off districts do not appear to have more natural resources than the poor ones, for instance.

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