There was a moderate downward trend over a couple centuries from around 7 to 4 children per woman. And then in the ‘60s it fell off a cliff[1]. [1] https://dat

There was a moderate downward trend over a couple centuries from around 7 to 4 children per woman. And then in the ‘60s it fell off a cliff[1]. [1] https://data.worldbank.org/indicator/SP.DYN.TFRT.IN?locations=US https://data.worldbank.org/indicator/SP.DYN.TFRT.IN?location...