《晋书·志·第五章》
惠帝划分桂阳、武昌、安成三郡设江州，把新城、魏兴、上庸三郡归属梁州，又划分义阳设随郡，划分南阳设新野郡，划分江夏设竟陵郡。
惠帝分桂阳、武昌、安成三郡立江州，以新城、魏兴、上庸三郡属梁州，又分义阳立随郡，分南阳立新野郡，分江夏立竟陵郡。
Emperor Hui divided Guiyang, Wuchang, Ancheng three commanderies to establish Jiangzhou, and he put Xinxin, Weixing, Shangyong three commanderies in Liangzhou, divided Yiyang to establish Suizhou, divided Nanyang to establish Xinye, divided Jiangxia to establish Jingling.
<s>[INST] Kindly elucidate the central themes in this passage in English: 惠帝分桂阳、武昌、安成三郡立江州，以新城、魏兴、上庸三郡属梁州，又分义阳立随郡，分南阳立新野郡，分江夏立竟陵郡。 [/INST] Emperor Hui divided Guiyang, Wuchang, Ancheng three commanderies to establish Jiangzhou, and he put Xinxin, Weixing, Shangyong three commanderies in Liangzhou, divided Yiyang to establish Suizhou, divided Nanyang to establish Xinye, divided Jiangxia to establish Jingling.</s>
Kindly elucidate the central themes in this passage in English: 惠帝分桂阳、武昌、安成三郡立江州，以新城、魏兴、上庸三郡属梁州，又分义阳立随郡，分南阳立新野郡，分江夏立竟陵郡。
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Emperor Hui divided Guiyang, Wuchang, Ancheng three commanderies to establish Jiangzhou, and he put Xinxin, Weixing, Shangyong three commanderies in Liangzhou, divided Yiyang to establish Suizhou, divided Nanyang to establish Xinye, divided Jiangxia to establish Jingling.
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