What did spheres of influence mean for china?
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a. china did not trade with foreigners at all.
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b. china traded only through ports in japan.
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c. chinese trade was completely controlled by the qing dynasty.
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d. chinese trade was dominated by foreign influence.

The spheres of influence meant for China that the Chinese trade was dominated by foreign influence.

Explanation:

The European powers that formed colonies in most parts of Asia refrained themselves from gaining control over China as they were more interested in doing trade with China.In order to achieve this feat of doing maximum trade with China, most European nations tried to influence the trade in China to function according to the demands of the European countries.This gave rise to the idea of spheres of influence that existed in China and extended to its geographic core where most tradables were manufactured.