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ELI5: Were there as many cultural (or other) changes through the decades 200, 600, 1000, 2500 years ago as there has been in the 20th and 21st centuries?
ELI5: Were there as many cultural (or other) changes through the decades 200, 600, 1000, 2500 years ago as there has been in the 20th and 21st centuries? * /r/explainlikeimfive
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