Throughout most of China's history it was ruled by powerful families called dynasties. The first dynasty was the Shang and the last was the Qing. Ancient China also boasts the longest lasting empire in history. It began with the Qin dynasty and the first emperor Qin who united all of China under one rule in 221 BC.
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This legal rule ensured the eventual end of slavery in Upper Canada, although as it diminished the sale value of slaves within the province it also resulted in slaves being sold to the United States.
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