Richard Nixon he was the cause
China remained patriarchal, China continued to trade silk and porcelain (<span>a white vitrified translucent ceramic)</span><span> on the silk roads in these two dynasties.
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Tariffs were essentially taxes on products coming into America. They meant that foreign goods could not compete with American products because, no matter how cheaply they could be produced, the addition of tariff fees to their selling costs would make them more expensive than American goods.
C IS THE ANSWER HOPE I HELPED :)