HistoryThe Inca Empire: Builders of the Andes
A scribe sits cross-legged on a stone terrace overlooking the Andes mountains, unrolling a quipu and pointing out green terraced hillsides, llamas grazing below, and a long stone road disappearing into the clouds.
- Locate the Inca Empire in the Andes mountains of South America
- Describe how terrace farming allowed the Inca to grow food on steep slopes
- Identify key features of Inca infrastructure and government
Key terms
- Inca Empire
- A large Andean civilization in western South America
- terrace farming
- Cutting steps into slopes to grow crops on mountains
- Sapa Inca
- The supreme ruler who led the entire Inca Empire
- mit'a
- A labor system where people worked on public projects
- Andes
- The long mountain range along South America's western edge
Farming on a Mountain
The steep Andes seem like a poor place to grow food, yet the Inca fed millions there. They carved wide flat steps called terraces into the hillsides, holding soil and water in place and turning slopes into farmland. Different crops grew at different altitudes, so the Inca used the mountain's many climate zones as an advantage rather than an obstacle.
Holding an Empire Together
Ruling a vast mountain empire required organization. The Sapa Inca governed from the top, and the mit'a labor system had communities contribute work instead of money — building roads, temples, and storehouses. A road network thousands of miles long carried messengers and supplies across the peaks, letting the Inca command distant regions despite the rugged terrain.
Worked examples
Explain how terrace farming let the Inca feed a large population.
- Identify the problem: steep mountain slopes are hard to farm and lose soil and water.
- Identify the solution: terraces create flat steps that hold soil and water in place.
- Connect the solution to the result: stable farmland at many altitudes produced enough crops for millions.
Answer: Terraces turned steep slopes into stable, level farmland at many altitudes, letting the Inca grow enough food to feed a large empire.
Activity
Sort these Inca features into 'Infrastructure' or 'Government and Society'.
Practice
Explain how the mit'a labor system helped build the empire.
Describe why a long road network mattered in mountainous terrain.
Common mistakes to avoid
- The Inca lived in the rainforestThe Inca heartland was the high Andes mountains, not the Amazon or coastal desert.
- Mountain peoples only hunted and gatheredThe Inca were skilled settled farmers who fed millions using terraces.
Check your understanding
Where was the Inca Empire located?
What was the main way the Inca farmed on steep mountain slopes?
Recap
The Inca built a vast empire high in the Andes mountains, using terrace farming to grow food on steep slopes. The Sapa Inca, the mit'a labor system, and a huge road network held the mountain empire together.
Reflect
Think about how the Inca turned a harsh mountain landscape into a thriving home.