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You can find an answer in this article. http://www.haowind.com/who-invented-the-compass

The earliest compass is made with natural magnet, the Chinese people of Hanzu have found a natural magnet and its iron absorption for a long time. According to ancient records, far away in the Chun Qiu and Zhan Guo Period, is in slavery society to a feudal society, the transition period of great change, productivity has been greatly developed, especially agricultural production is flourishing developed, prompted by the mining industry. This helped the development of the mining industry. In the long-term production practice, people recognize the magnet from the iron ore. The earliest compass is named Si Nan. It is the first compass in China and the whole world.

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12y ago

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