Answer:
Depends on the geographical characteristics of the region.
Step-by-step explanation:
The most populated and least populated regions depends on the geographical characteristics of the region. Those regions having good geographical characteristics such as flat plain land, coastal regions etc having high population whereas least population is present in those regions where bad geographical characteristics such as hilly areas and desert regions etc are present so we can say that most populated and low populated regions depends on the geographical characteristics of the region.