What was the purpose of the great wall of china
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- What was the purpose of the great wall of china built
- What was the original purpose of the great wall of china
- What was the primary purpose of the great wall of china
- What was the purpose of building the great wall of china
- What was the significance of the great wall of china
- What was the length of the great wall of china
- What was the importance of the great wall of china
- What was the height of the great wall of china
- What was the cost of the great wall of china
- What was the history of the great wall of china
- What was the materials of the great wall of china
- What was the construction of the great wall of china
- What was the size of the great wall of china
- What was the width of the great wall of china
- What was the timeline of the great wall of china