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.
PROTIP: Give people the answer choices when you ask a question. Anyway, the answers I got on Apex were Clay and bone, Bronze and stone, and Silk and bamboo.
The Western Democracies feared the communist revolutionaries in Russia; and supported the White Army in hopes of stopping the communist Red Army from taking control.
