How does the author introduce the idea tha

new advances in book production

continued to occur after the creation ofparchment?

by explaining that parchment was difficult to

create

by giving examples of two new inventions in

China

by discussing the invention of the printing

press in Germany

by pointing out that parchment was difficult to

use

Parchment is a medium used for writing books which are used for about 2000 years by the humans. This writing medium is made from the skin of sheep, calf and goat.The production of parchment is very hard and time consuming. In many European countries, new inventions were made such as printing press which make our work easier and the trend of using parchment is stopped.