Why was it difficult for european merchants to trade with china before the early 1800's? a) there was little demand for european goods in china. b)only merchants who spoke chinese could trade in china. c)opium was the product foreign merchants could legally sell in china. d)trade with china could only be conducted outside the chinese territory.

How does the supremacy clause of the u.s. constitution affect the states? o a. it requires each state to establish a supreme court. b. it declares that the federal government can take away state powers if necessary. o c. it allows state governments to overthrow the federal government if necessary. o d. it ensures that the u.s. constitution overrules each state constitution