Answer this i'm gonna fail history : : : -000
11. the sumerians first used for trade, but later switched to because .

representative government

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question as stated in comment

why did the chinese require the portuguese to pay for goods in gold and silver when trading?

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portuguese goods were less valuable than chinese goods.

the chinese already had a surplus of portuguese goods.

the imperial government wanted to stockpile gold and silver.

portuguese and chinese currencies were not exchangeable.

this a history q n in ancient time, theres no money exchange. so ans is portuguese and chinese currencies were not exchangeable.