Step 1: Understanding the Concept:
The Demographic Transition Model (DTM) describes how the population of a country changes over time as it transitions from a pre-industrial to an industrialized economic system.
It is based on historical population trends of birth rates and death rates.
Step 2: Detailed Explanation:
Stage I (High Stationary): Both birth rates and death rates are high and fluctuating, resulting in slow population growth.
Stage II (Early Expanding): Death rates drop rapidly due to improvements in healthcare and sanitation, but birth rates remain high, causing rapid population growth.
Stage III (Late Expanding): Birth rates begin to fall due to various social changes (urbanization, education of women, contraception), and population growth begins to slow down.
Stage IV (Low Stationary): Both birth rates and death rates become low and stabilize, leading to a stationary or very slowly growing population.
Step 3: Final Answer:
Both birth and death rates become low in Stage IV – Low Stationary Stage.