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# Stages of Demographic Transition This table describes the stages of demographic transition, which is a model that tracks changes in birth and death rates over time. | Feature | Stage 1 (Pre-industrial) | Stage 2 (Industrializing/Transitional) | Stage 3 (Industrialized) | Stage 4 (Post-industrial...

# Stages of Demographic Transition This table describes the stages of demographic transition, which is a model that tracks changes in birth and death rates over time. | Feature | Stage 1 (Pre-industrial) | Stage 2 (Industrializing/Transitional) | Stage 3 (Industrialized) | Stage 4 (Post-industrial) | |---|---|---|---|---| | **One-word description** | Pre-industrial | Industrializing/Transitional | Industrialized | Post-industrial | | **Overall population size** | Stable and low | Increasing quickly from low to higher | High | Highest to decreasing | | **Birth rate (CBR)** | High | High, then slight decrease | Becoming low | Low | | **Death rate (CDR)** | High | Much lower than stage 1 | Low | Low, may increase due to high elderly population (low - low(er) = low, may become negative) | | **Growth rate (CBR - CDR)** | High - high = low or zero | High - low = high | Lowering - low = decreasing to low | Low, may increase due to high elderly population (low - low(er) = low, may become negative) | | **Age structure diagram** | Pyramid with wide base, tapers quickly and early due to high IMR and CDR (growth is still low to zero due to high deaths) | Pyramid with wide base, tapers more slowly and goes higher due to lower IMR and CDR | Column, more even distribution |Inverted pyramid (high % post-reproductive) | **Note:** IMR stands for Infant Mortality Rate and CDR stands for Crude Death Rate. The table also shows a diagram of the age structure in each stage, which are shown below. **Age Structure Diagrams:** The table includes images (not provided here) of age structure diagrams for each stage. Each diagram is described in the table. For example, the pre-industrial stage has a wide base at the bottom (representing large numbers of young people), and the top narrows (showing fewer older people). Each stage has a distinct age structure reflecting changes in birth and death rates.