Answer:
C
I've read or seen something like this before
Explanation:
Answer:
pursuing non violence would be a risk because it might not always work to solve issues and people might become violent to him and he'll get hurt
Explanation:
Answer:
B
pregnant slaves were a profit and sold their kids at auctions
Answer:
The use of the abacus was expanded and refined.
Explanation:
The abacus was invented during the Yuan Dynasty which lasted between 1206AD till 1368AD and then it was expanded and refined by the Ming Dynasty (1368AD-1644AD).
There have been archaeological proof of this as the writings of Tao Zongyi describes in his book that the new servants, unlike the older and more experienced ones were "just like abacus heads" and that they would not move unless they were made to move. This bears credence to the fact that the abacus was already widely used then.
An abacus was used to count numbers.
The banks took money from the common people and passed it on to the wealthy and upper class.
