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When did Jiangsu become a separate province?
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Jiangsu
Qiling Pagoda, Yangzhou, Jiangsu province, China.
Jiangsu became a separate province in 1667, during the sixth year of the reign of the Kangxi emperor. The name of the province is derived from the prefixes of Jiangning and Suzhou, which were the two most important prefectures in the region at that time.1