Answer: Because China has become the world's largest economy (on a purchasing power parity basis), manufacturer, merchandise trader, and holder of foreign exchange reserves. This in turn has made China a major commercial partner of the United States.
Step-by-step explanation: China makes furniture, and clothing for western countries that also have a large population. Without China, we wouldnt have computers, cell phones, electronics with great technology, clothing, and some furnitures. Of course not everything is made from China; some of our clothing is from Pakistan, and Afghanistan