Pablo is most likely at Stage 3 of the demographic map.
The Demographic Transition Model aims to predict how the population of an area will progress based on observations about population in other countries.
There are 5 stages and Pablo is most likely at the third stage where:
birth rates begin to decline as shown by Pablo having three children
less people are involved in agriculture as shown by Pablo moving to the the city
In conclusion, Pablo's unwillingness to have more children and his move to the city shows that this is stage 3 of the Demographic Transition Model.
The largest functional difference between the late republic and the early imperial government was essentially that the republic was unable to control the vast empire while the imperial system could. ... Indeed much of the key expansion of the Roman Empire occurred while it was still a Republic
