Answer:
Nung Shu is considered the world's first mass-produced book. It was exported to Europe and, coincidentally, documented many Chinese inventions that have been traditionally attributed to Europeans.
<span>Serafina is most likely at the formal operational stage. During this stage children begin to think abstractly and independently developing their own ideas and opinions. Their reasoning skills and logical thinking become a major part of their thought process during this stage. Once this stage is reached by older children it will stay with them throughout life.</span>
Seval ozhabes Seval your dad is going to be there for a while and I will be there for a while and I will be