Population

The Demographic Transition Theory explains the transformation of countries from high birth and death rates to low birth and death rates as part of the economic development process. It is divided into three stages:

• Stage I – High Stationary Stage:
  • Both birth rate and death rate are high.
  • Population growth is slow and fluctuating.
  • Common in pre-industrial societies (e.g., tribal communities).
• Stage II – Early Expanding Stage:
  • Death rate declines due to better healthcare and sanitation.
  • Birth rate remains high, leading to rapid population growth.
  • Seen in developing countries (e.g., India in the mid-20th century).
• Stage III – Late Expanding or Low Stationary Stage:
  • Both birth and death rates decline.
  • Population growth slows and stabilises.
  • Observed in developed countries (e.g., Japan, USA, Germany).

The theory helps in understanding the population growth trends and planning for future development needs.

India has a highly uneven population distribution. Some states like Uttar Pradesh, Maharashtra, and Bihar are densely populated, whereas others like Arunachal Pradesh, Mizoram, and Sikkim are sparsely populated. This imbalance is due to a combination of several factors:

• Physical Factors: Areas with flat plains, fertile soil, moderate climate, and ample water supply (like the Indo-Gangetic plain) support dense populations. In contrast, deserts (like Rajasthan), mountainous areas (like the Himalayas), and thick forests (like in the Northeast) tend to have low population densities.
• Socio-economic Factors: Regions with better infrastructure, transport, industry, education, and employment opportunities (e.g., Delhi, Mumbai, Bengaluru) attract more people and thus have higher densities.
• Historical Factors: Colonial policies, patterns of migration, and early industrial development have also led to higher population concentrations in specific regions. For example, Kolkata developed as a colonial port and trade hub, leading to dense settlement.

Hence, both the Assertion and Reason are correct, and the Reason correctly explains the Assertion.