Government poverty-reduction programs were decisive.
Source: America’s successful war on poverty
Part of it (but not all of it) might be because there are a lot fewer children:
Opinion: Factfulness, Skepticism & Realism, Sometimes satire and parody.
Government poverty-reduction programs were decisive.
Source: America’s successful war on poverty
Part of it (but not all of it) might be because there are a lot fewer children: