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What declined with the fall of Han Dynasty the dynasty fell into chaos and corruption within the eunuchs empress' clan, and Confucian scholar officials caused for the dynasty to slowly fall apart; power and control was lost.

What continued after the fall of Han Dynasty - When the Han Dynasty collapsed in 220 CE, no one was powerful enough to reunify China under a single emperor. The result was the period of the Three Kingdoms, which lasted until 280 CE, when the Jin Dynasty took over. These three kingdoms, Wei, Shu, and Wu, battled for control in a long series of wars.

Explanation:

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The Government runs under the framework established by the Constitution of Japan adopted in 1947. It is a unitary state, containing forty-seven administrative divisions, with the Emperor as its head of state.[1] His role is ceremonial and he has no powers related to Government.