Which of these was the most important reason for the success of the economy of han china?
a) trading gold with the roman empire.
b) sea voyages of zheng he's navy.
c) mongol control of the silk road.
d) han control of silk road trade.

to answer this question you need to explain more

what are the options mate?

explanation:

not to be rude or anything but, nobody can really answer that if you don't add the options sorry if it came of rude uwu

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