<span>most Southerners saw Lincoln's election as a threat to their way of life and the end of slavery</span>
Answer:
Nationalism was a great cause of World War one because of countries being greedy and not negotiating. Nationalism shows you are proud of your country and want it to be the best. A lot of causes all linked back to countries all wanted to be better than each other.
Explanation:
Answer:
I think it is C an increase in acid rain my apologies if I am wrong
An amendment is a formal or official change made to a law, contract, constitution, or other legal document. ... Amendments can add, remove, or update parts of these agreements. They are often used when it is better to change the document than to write a new one.
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.
