How were the Qin Empire and the Han dynasty similar and different? A. Both the Qin and Han were ruled by a powerful emperor, but the Qin believed in the Mandate of Heaven, whereas the Han believed in legalism. B. Both the Qin and Han used the Silk Road for trade, but only the Han experienced significant economic benefits. C. Both the Qin and Han had an economy based on agriculture, but their farming methods and crops were different. D. Both the Qin and Han had a strong central government, but the Han used a civil service system and the Qin did not.