Which of the following describes one of the mongol empire's major economic accomplishments?
a. the mongol empire was the first large state to introduce paper money.
b. the mongol empire plundered the territories it captured, devastating the economies of entire regions.
c. the mongol empire was led by rural farmers and converted its conquered territory to farmland.
d. the mongol empire guarded roads carefully to promote trade throughout its territory.

The correct answer is "D".

The Mongol Empire lasted from 1206 until 1368 AD. It is considered as the largest contiguous empire in history, Due to this condition, the Empire was highly supportive of merchants and trade, as numerous individuals who traveled long distances in order to transport goods from Europe to the Far East went through the Empire's governed land. Merchants provided valuable information to the empire about neighboring cultures. Many of them ended up serving as diplomats or official traders of the Empire.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration