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Definition of Han dynasty
1. Noun. Imperial dynasty that ruled China (most of the time from 206 BC to AD 220) and expanded its boundaries and developed its bureaucracy; remembered as one of the great eras of Chinese civilization. 
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1. Noun. Imperial dynasty that ruled China (most of the time from 206 BC to AD 220) and expanded its boundaries and developed its bureaucracy; remembered as one of the great eras of Chinese civilization.