What specific three precious resources did nubia have?
a. nubia had gold, wheat, and linen
b. nubia had gold and minerals
c. nubia had silver and gold
d. nubia had ebony, ivory, and gold

NUBIA HAD GOLD AND MINERALS

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NUBIA HAD SILVER AND GOLD

Explanation:

Nubina was one of acient Egypts main trading partners, they often traded wheat and grains for gold sliver and iron. (This applies to nubina only)

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.