Fertility has been steadily dropping since long ago throughout industrialization; the boom since the 50's are an anomaly. https://en.wikipedia.org/wiki/File:US_

Fertility has been steadily dropping since long ago throughout industrialization; the boom since the 50's are an anomaly. https://en.wikipedia.org/wiki/File:US_Birth_Rates.svg https://en.wikipedia.org/wiki/File:US_Birth_Rates.svg https://www.gapminder.org/tools/#$model$markers$line$data$filter$dimensions$country$country$/$in@=usa;;;;;;&encoding$selected$data$filter$markers@=usa;;;;&y$data$concept=children_per_woman_total_fertility&space@=country&=time;;&scale$type:null&domain:null&zoomed:null;;;;;;&chart-type=linechart&url=v1 https://www.gapminder.org/tools/#$model$markers$line$data$fi...