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This has been the longest period of Peace in Western Europe in history by a massive margin. That's evidence. Non top tier countries used to fight all the time

This has been the longest period of Peace in Western Europe in history by a massive margin. That's evidence. Non top tier countries used to fight all the time in Europe before.

danielvf 10y ago
No, that's correlation, not evidence. :)
- lhopki01 10y ago
  Yes it is correlation but then there's not such thing as evidence in social sciences. Correlation is all we've got.