Largest population growth in areas with higher mortality risk. You think maybe the two are related? That the stress of not knowing whether your offspring will survive to adulthood is a biological trigger for having more children.
Personally, no. Latin America is statistically more dangerous than North America yet their population growth is not significantly larger.
The largest factor toward population growth has been shown many times to be the education level of women. More choices for women means fewer children. This is disccused in my source links above.
I think it's better described as "largest population growth in areas with no pension". When the only way to provide for your old age is to live with your children, you have significant reason to have several.