Demographic Transition

The demographic transition is the population change in a country. It is divided into 4 stages, and each of these stages are determined by factors like economic stability, birth and mortality rates, increase rates, etc. Stage one of the demographic transition is a unique stage because it is the only stage in which no countries are in. This is because stage one countries have not hit the agricultural revolution, and all countries now have mastered farming and the domestication of animals. Other characteristic of stage one are fluctuating crude birth and death rates, and low, unstable growth, along with a low life expectancy. However, there are still countries in stage two of the demographic transition. Stage two countries are defined by having a high NIR (natural increase …show more content…
Both of these countries have CBRs in the same upper teens, lower twenties range, and their CDRs are both around six. Their NIR is also both around in the one to two percent increase range because of the closing gap between the CBR and the CDR. The life expectancy also increases to around 70, because of introduction of new technology and healthier living conditions. Stage 4 might be the stage we are most familiar with because this is the stage the united states is in. This stage is indicated by low a CBR and CDR, and a stable and low NIR. The life expectancy is very high as well because these countries are sealed with strong economies and advanced living conditions. Along with the United States, other examples of countries in stage 4 are China and France. All three of these countries have little to no gap in between the low CBR and the CDR, also known as having having zero population growth (ZPG). Having zero population growth is also characterized with having an NIR under about .5 percent growth. These countries are stage 4 due to their high life expectancy, all of which are about 80 years old, because of the higher living