Here's a literature reference supporting several of these points - https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-020-8331-7 https://bmcpubli

Here's a literature reference supporting several of these points - https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-020-8331-7 https://bmcpublichealth.biomedcentral.com/articles/10.1186/s... : > In decreasing order of strength, fertility (TFR) correlates negatively with education, [contraceptive prevalence rate], and GDP per capita, and positively with religiosity.