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Demographic transition  From Citizendium, the Citizens'
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Citable Version. Main Article Related Articles  [?] Bibliography
 [?] External Links  [?] Citable Version  [?]  In demography,
demographic transition theory was introduced in the 1940s to
provide a description and explanation of the main lines of
European and American population history.[1] It is the theory
that societies progress from a premodern regime of high
fertility and high mortality to a postmodern regime of low
fertility and low mortality. The cause of the transition has
been sought in the reduction of the death rate by controlling
epidemic and contagious diseases. Then, with modernization,
children become more costly. Cultural changes weaken the
importance of children. The increasing empowerment of women to
make their own reproductive decisions leads to smaller families.
Thus there is a change in values, emphasizing the quality of ch