Q.What are the probable factors that contributed to population explosion in India?
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Start your 14-day free trial to unlock the full solution →India's population explosion stemmed from a sharp fall in death rates (due to disease control and better healthcare) while birth rates remained high, compounded by improved food security, lack of widespread family planning awareness, and socio-cultural preferences for larger families.
Population growth becomes an "explosion" when the gap between birth rates and death rates widens dramatically in a short span. India experienced this phenomenon primarily in the twentieth century, transforming from a country with relatively stable population numbers into one of the world's most populous nations. Understanding why this happened requires looking at both what changed and what stayed the same.
The most decisive factor was the steep decline in mortality without a corresponding drop in fertility. Colonial and post-independence public health measures—mass vaccination campaigns against smallpox, cholera, and plague, the use of antibiotics, better sanitation in urban areas, and the establishment of primary health centres—brought death rates down rapidly. Epidemics that once killed millions were contained. Infant and child mortality, historically very high, began to fall. People lived longer. Yet the number of children each family had did not decline at the same pace, creating a yawning gap that fueled exponential growth.
Improvements in food availability also played a role. The Green Revolution of the 1960s and 70s, with high-yielding variety seeds, irrigation expansion, and fertiliser use, reduced the frequency and severity of famines. Better nutrition meant healthier mothers and children, further lowering death rates and improving survival chances for infants.
The NCERT textbooks emphasise that while mortality fell across all age groups, fertility remained high because social attitudes, economic structures, and cultural norms around family size changed much more slowly than medical technology.
Several socio-cultural and economic factors kept birth rates elevated:
- Early marriage, especially for women, extended the reproductive span and was deeply embedded in tradition.
- Preference for male children led families to continue having children until they had the desired number of sons, often resulting in larger family sizes.
- Lack of education and awareness about family planning, particularly in rural areas where the majority of the population lived, meant contraceptive use remained low.
- Economic utility of children in agrarian societies—children were seen as labour assets and old-age security—discouraged smaller families.
- Religious and social norms that valued large families and viewed children as blessings further reinforced high fertility. …
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