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原创 古代封建王朝为何难以逾越300年大关?
自秦始皇统一六国,创建以郡县制和自耕农体系为基础的大一统封建王朝以来,两汉、魏晋、隋唐、元明清,历朝历代由开元建国到最终灭亡,为何一般都难以逾越300年的国祚大关呢? 威胁王朝生存的,主要有诸侯王造反、外戚篡权、宦官干政、藩镇割据、农民 ...
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