Demographic Transition part 2

Today in human geo we watched two videos on the demographic transitions. The first video explained the stages of the demographic transtion but at a college like level. The second video also explained the demographic transitions stages using terms we know. There are four stage of the demographic transitions. Stage 1, has a high crude birth rate and a high crude death rate.
Stage 2,  rapidly declining death rates and very high birth rates produce very high natural increase. Stage 3, a country moves from stage 2 to stage 3 of the demographic transition when the CBR begins to drop sharply. A country reaches stage 4 when the CBR declines to the point where it equals the CDR and the NIR approaches zero.

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