What is the approximate total distance spanned by the Great Wall of China in __________ kilometers.
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Answer: D. 21,196
Explanation
The official total measured length of the Great Wall of China is 21,196 kilometers. Advanced surveying techniques and archaeological excavations revealed the true sprawling extent of various interconnected wall sections. Remnants span numerous provinces across northern China and include natural defensive barriers reinforced by masonry. Ancient Chinese dynasties constructed massive defensive fortifications to protect their northern borders from nomadic tribal incursions. Builders utilized locally sourced materials such as tamped earth, stone blocks, timber, and fired bricks depending on geography. The fortification network represents one of the most ambitious engineering and construction projects in human history.
Option A underestimates the official archaeological measurement by thousands of kilometers of newly discovered trench networks. Option B represents an intermediate estimate that predates the comprehensive national survey conducted by cultural authorities. Option C is slightly lower than the officially verified total length calculated by modern satellite and field mapping studies.
- Subject
- General Knowledge
- Category
- General Knowledge
- Topic
- —
- Difficulty
- medium
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