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C.) It made China the center of trade

Explanation:

The Silk Road being the main reason in support of this argument.

it isolated China from other civilizations

Explanation:

its long mountain ranges prevented other countries from reaching China for many centuries allowing for it to develop on its own

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.