100% agree with your question. I can think of many ways that would be better. One of those cool maps where the country area is proportional to its population would work better. Lots and lots of graphical options, too. e.g. Bubble chart with index on the x-axis, bubble area proportional to population, gdp per capita on the y-axis. Colour for some sort of measure of wealth inequality like a Gini #?. The correlation between poverty and corruption would be interesting. Just spitballing…
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