Answer: A. Bamboo, shells, bones, and wood
Explanation: Before its invention, bones, tortoise shells, and bamboo slips were all used as writing surfaces, but as Chinese Hemp fiber and silk were used to make paper but the quality was far from satisfactory. Books at that time were made of wood or bamboo slips so they were heavy and occupied a lot of space.
Scientist bgan to really observe the world around them
Answer:
The allies would have lost the war
