There are five stages in demographic transition theory. They are:
First Stage: This is also known as a state of high death rate and high birth rate. In this stage the growth of population is very slow. The countries having this situation; agriculture is the main basis of livelihood.
Second Stage: In this stage, the birth and the death rate both are high, but due to development of medical facilities the death rate has decreased slowly.
Third Stage: In this stage, the birth rate is high but the death rate is medium. It means neither higher low. Due to this, the population grows rapidly.
Fourth Stage: In this stage, the birth rate is at medium pace but the death rate is very low.
Fifth Stage: In this stage, the birth rate as well as the death rate is very low. In this situation, there is a fear of fall in the population growth. In this stage, the manpower of the nation becomes deficient.
