the demographic transition

we learn about the demographic transition, the demographic transition is a process of change in society's population from high crude birth and death rates and low rate of natural increase to a condition of low crude birth and death rates, low rate of natural increase, and higher total population.
 In this topic we have 4 types of stage. stage1 low growth. stage 2 high growth, stage 3 moderate growth, stage 4 low growth.