Demographic transition theory can be used to describe and predict the future population of any area. The theory tells us that population of any region changes from high births and high deaths to low births and low deaths as society progresses from rural agrarian and illiterate to urban industrial and literate society. These changes occur in stages which are collectively known as the demographic cycle.

Which stage of Demographic Transition theory showed expanding population ?

Stage II

The second stage of Demographic Transition theory showed an expanding population because fertility remained high in the beginning of second stage but it declined with time. This was accompanied by reduced mortality rate. Improvements in sanitation and health conditions lead to decline in mortality. Because of this gap the net addition to population was high.