Important "great divide year" after which the added population exceeds that of previous decade:
Ans. (b) 1921Ref: Internet SourceThe year 1921 is a "year of the great divide" in the demographic history of India when mortality started to decline leading to acceleration in the rate of population growth. During the next three decades (1921-51) the rate of population growth continued at a level of over one per cent per annum. It is going increasingly since then. Hence the year 1921 is rightly called the demographic divide or year of great divide.Impact of economic growth in an economy will generally have the following impact on the population:* High birth rate and High death rate -Leads to low population growth (under-developed economy)* High birth rate and Low death rate -Leads to High population growth (developing economy)* Low birth rate and Low death rate -Leads to Low population growth (developed economy)* In countries where children are regarded as assets, the rate of birth will be high, however due to low economic growth the health services will be poorer leading to high death rates also. E.g. India* Once the country achieves certain level of economic growth over a period of time, the health services would become accessible to people, which would lead to high rate of birth and low rate of death.* Once a good level of economic growth and literacy rate is achieved, the people will tend to have less children, leading to low rate of birth and low rate of death.
1957
1921
1951
1957
Epidemiology