<span>D) they used rivers and bodies of water for food and for trade.</span>
Answer:
Though it seems confusing at first, they all boil down to three main techniques: the traditional dominance method, the scientific method and the positive reinforcement method.
the most effective is the traditional dominance method
Explanation:
the correct answer is bamboo and silk
Chinese have been the world sole producer of silk for several centuries, a commodity that often caused a balance of trade deficit between the country and the rest of the world. the secret of silk making was also protected with royal decree for a long time, which makes it a popular material for making music instrument. Bamboo is often preferred for its hollow inside.
