When a society gives an object a specific value it becomes a a. barter good b. representative currency c. sustainable good d. commodity currency

D. commodity currency

Explanation:

The coin is a piece of a resistant material, of uniform weight and composition, usually of metal coined in the shape of a disc and with the badges chosen by the issuing authority, which is used as a measure of exchange (money) for its legal or intrinsic value and as a unit of account. Currency of the legal tender of a State is also called currency.

d: their own individual powers within the new goverment

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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