It's possible for different influences to play a part in different countries and cultures. Further, there is a remarkable scale difference.
The high survivability of children now means that having large numbers of children dropped everywhere. You don't need to have "extras". The problem is when the number drops too much. It did in Iran due to literal government influence, and is quickly turning back to replacement level. Saudi Arabia is above replacement level.
That is very different than Canada (1.33) or South Korea (0.88), or Switzerland (1.39). The scale is dramatically different.
The high survivability of children now means that having large numbers of children dropped everywhere. You don't need to have "extras". The problem is when the number drops too much. It did in Iran due to literal government influence, and is quickly turning back to replacement level. Saudi Arabia is above replacement level.
That is very different than Canada (1.33) or South Korea (0.88), or Switzerland (1.39). The scale is dramatically different.