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While GDP per capita is often considered the standard metric, compensating for differences in living costs and rates of inflation by using purchasing power parity (PPP) can better assess an individual’s buying power in any given country. It is hard to pinpoint a single cause for long-term poverty. Corrupt governments can make a very rich nation into a poor one. And so can a history of exploitative colonization, weak rule of law, war and social unrest, severe climate conditions or hostile, aggressive neighbors. Weaknesses compound: A country in debt will not be able to afford good schools, and a poorly educated workforce will limit capacity.
