Demographic Transition

          Demographic Transition (DTM) is yet another model used in the world to help understand population growth. DTM was developed in 1929 by the American demographer, Warren Thompson. Adolphe Landry of France and Frank W. Notestein both built upon Thompson's idea's however, the initial thought is given to Thompson. DTM refers to the transition from high birth and death rates to lower birth and death rates that typically occurs when the country is transitioning to a pre-industrialized economy to an industrialized economy. This model proposes the theory that population will eventually stop growing. This theory has proven true for many countries but for certain countries in Sub-Saharan Africa and some Middle Eastern countries, there is an exception because they are poor and are negatively effected by their government/military. Within DTM, there are five different stages. Stage 1 is known as high stationary which means, the birth and death rate are both at their highest providing a very stable population growth. Stage 2 which is called early expanding has a high birth rate but a rapidly falling death rate, ultimately resulting in a very rapid population increase. The 3rd stage which is also known as late expanding has a falling birth rate and a death rate that is falling slowly and because of this, the population increase slows down. The second to last stage known has low stationary has both a low birth and death rate resulting in a stable or very slow population increase. The very last stage has a very low birth rate and a low death rate which will allow for a very stable population of allow for a very slow decrease.