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.
Answer:
read explantion
Explanation:
England was motivated in part by the lure of both riches and the Northwest Passage.
Dr. J. Craig Venter became leader in the field of medical research when A) He combined research with Dr. Francis Collins to help map the human genome.
Answer:
Explanation:
The Nazi party stands for the National Socialist German Worker's Party. One of the main reasons for its rise was the hardship that the Treaty of Versailles caused Germany. Germans felt that the outcome of WWI was unfair and unjust, they wanted to return to the days of Bismarck- where Germany was a leading power.
