In Stage 2 of the DTM, a nation's death rate rapidly declines while its birth rate stays high.
According to this model, the Demographic Transition Model, there will be a change from high fertility/high mortality to low fertility/low mortality, with a phase of rapid growth in between where dropping fertility rates will lag behind declining death rates.
Frank Notestein and Kingsley Davis first introduced the demographic transition theory in the manner that would eventually become almost generally accepted in 1944–1945. All societies, from a preindustrial to a postindustrial demographic equilibrium, were thought to go through these three stages.
To know more about DTM, visit:
https://brainly.com/question/25222816
#SPJ4