| Feature | Pre-industrial pattern | Industrial pattern | Post-industrial pattern |
|---|---|---|---|
| Dominant employment | Primary | Secondary often strong | Tertiary and quaternary |
| Main productivity shift | Agriculture mechanizes slowly | Manufacturing scales and mechanizes | Services digitize and specialize |
| Typical labor movement | Rural to mixed | Rural to urban factories | Industry to service and knowledge roles |
| Common risk | Low incomes and underemployment | Vulnerability to global competition | Skills mismatch and inequality |
Exam rule: Identify pattern first, explain mechanism second, and evaluate implications third.