The best and most correct answer among the choices provided by your question is the third choice or letter C "<span>An adviser of Justinian."</span>
Theodora was empress of the Byzantine Empire and the wife of Emperor Justinian I. She was one of the most influential and powerful of the Byzantine empresses. Some sources mention her as empress regnant with Justinian I as her co-regent.
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B. Pax Mongolica. In Pax Mongolica, there is relative peace that happened after Kublai Khan was killed. Resulting to this, the re-opening of Silk Road gave way to transfer to culture, tradition, and trades, and religion.
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I'm not sure if this is meaning empire or emporer, but the emporer was Constantine
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