Editing Demographic transition (section)

=== Stage one ===
In pre-industrial society, death rates and birth rates were both high, fluctuating rapidly according to natural events, such as drought and disease, to produce a relatively constant and young population.<ref name=":2" /> [[Family planning]] and contraception were virtually nonexistent; therefore, birth rates were essentially only limited by the ability of women to bear children. Emigration depressed death rates in some special cases (for example, Europe and particularly the Eastern United States during the 19th century), but, overall, death rates tended to match birth rates, often exceeding 40 per 1000 per year. Children contributed to the economy of the household from an early age by carrying water, firewood, and messages, caring for younger siblings, sweeping, washing dishes, preparing food, and working in the fields.<ref>{{cite web|url=http://geographyfieldwork.com/DemographicTransition.htm|title=Demographic Transition Model| website=geographyfieldwork.com}}</ref> Raising a child cost little more than feeding him or her; there were no education or entertainment expenses. Thus, the total [[Cost of raising a child|cost of raising children]] barely exceeded their contribution to the household. In addition, as they became adults they became a major input to the family business, mainly farming, and were the primary form of insurance for adults in old age. In India, an adult son was all that prevented a widow from falling into destitution. While death rates remained high there was no question as to the need for children, even if the means to prevent them had existed.<ref name=Caldwell5>Caldwell (2006), Chapter 5</ref>

During this stage, the society evolves in accordance with [[Malthusian growth model|Malthusian]] paradigm, with population essentially determined by the food supply. Any fluctuations in food supply (either positive, for example, due to technology improvements, or negative, due to droughts and pest invasions) tend to translate directly into population fluctuations. [[Famine]]s resulting in significant mortality are frequent. Overall, [[population dynamics]] during stage one are comparable to those of animals living in the wild. This is the earlier stage of demographic transition in the world and also characterized by primary activities such as small fishing activities, farming practices, pastoralism, and petty businesses.