Answer:
B. An increase in knowledge as well as written books
Explanation:
You see an increase in knowledge and written books because as time goes on more books can be written and as more and more are written more people can read them and learn from them. People can also write their own books about something they know, which would spread their knowledge to others that read and add to the amount of written books.
The exchange of goods is necessary for the advancement of their own cultures.
Without commerce to China, much of the America’s material goods would not be present
4.B)Baby mice can vary...