Answer:all of these videos have value as objects of culture (so C )
What do you need to know about the Indus River Valley people?
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.
It casued the great rural-urban mirgration of farmers to the cities looking for new jobs and led to the develpment of many technologies like penecillin, a commen vacine
