The primary sector is all about extracting or harvesting natural resources – think farming, fishing, mining. It’s like the foundation of a house: without it, the rest can’t stand. In low‑income countries, a large part of the workforce is in this sector because the economy still relies on raw materials.
This sector takes raw materials and turns them into finished goods – manufacturing, construction, and processing. It’s like the middle layer of a house where walls are built. As a country develops, more workers move into this sector because factories and infrastructure grow.
The tertiary sector provides services – retail, finance, education, health, tourism. Think of it as the roof that protects and supports the house. In high‑income economies, most people work here because services are the biggest part of GDP.
| Country Type | Primary (%) | Secondary (%) | Tertiary (%) |
|---|---|---|---|
| Low‑income | \$60\%\$ | \$30\%\$ | \$10\%\$ |
| Middle‑income | \$20\%\$ | \$40\%\$ | \$40\%\$ |
| High‑income | \$5\%\$ | \$15\%\$ | \$80\%\$ |
Exam Tip: When answering questions about sectoral composition, use the table to illustrate typical patterns and explain why the shift from primary to tertiary reflects industrialisation and income growth. Remember to mention key drivers such as technology, capital investment, and consumer demand.
Quick Check: If a country’s GDP is growing but its primary sector employment is falling, what does that suggest about its development stage? (Answer: It’s moving from a low‑income to a middle‑income economy, with more focus on manufacturing and services.)