Study Figure 2b, which shows the changing employment structure of a country over a 50-year period.
Analyse the reasons for the changes in the employment sectors shown. Refer to data from Figure 2b in your answer.
Figure 2b: Percentage of workforce employed in different sectors
| Development Phase | Primary Sector (%) | Secondary Sector (%) | Tertiary Sector (%) | Quaternary Sector (%) |
|---|---|---|---|---|
| Phase 1 (1970) | 60 | 15 | 25 | 0 |
| Phase 2 (1995) | 25 | 40 | 35 | 0 |
| Phase 3 (2020) | 5 | 22 | 65 | 8 |
