Asked by Maibell from australia | Aug. 24, 2017 05:47
About:Four Great Inventions of Ancient China
When was the compass invented?
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Answers (3)
Answered by Cathy
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Aug. 24, 2017 22:23
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The acicular-shaped compass was invented in Song Dynasty (960 - 1279 AD). But the primitive south-pointing tools was inveted in Warring States Period (475 - 221 BC).