That Hajnal line again, http://en.wikipedia.org/wiki/Hajnal_line … https://twitter.com/MaxCRoser/status/604177076892102656 …
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@CplusKx because there was a soviet system in eastern europe in 1878. oh, no, wait. uh...1902. oh, no, not then either. hmmmm?
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@CplusKx out of the "core europe" countries there (there are 9 of them listed on this map) 4 abolished pre-1940s. almost half. @Paradigmian
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