Why do larger countries generally tend to be poorer than smaller countries, on average, besides a couple of exceptions?
Correlation doesn't equal causation. Colonial powes made up big states in the regions they formerly occupied, throwing together a bunch of different ethnicities that don't belong because nationalist pressure was so high that they couldn't properly deal with the situation.
>>3019615
This. My guess is once you control for other factors (IQ, style of government, coastlines, resources, etc.) the correlation between size and wealth will vanish.