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![What was the Great Wall of China - Early Humans and Begin - [Teachoo] - Concepts](https://cdn.teachoo.com/e3dba4d6-47c4-4c86-9319-4b95fe9c4ce5/the-great-wall-of-china.jpg)
- The purpose was protection against the violent raids of nomadic tribes .
The Great Wall
Built over two thousand years
1. Separate walls
From 680 BCE onwards
Example:
Zhou and other dynasties
2. Joined together
One defence line
Example:
Nomadic raids
3. Repaired for centuries
Until the 17th century CE
Example:
Expansion and repair
- These separate walls were later joined together to make an effective defence mechanism .
Nomadic tribes are groups who move from place to place instead of settling.
