1st reason was that some people wanted to end slavery
The invasion of the "demilitarized zone" temporarily halted the fighting between the KMT and CPC, but it should be noted that this was not for long at all.
It showed everyone inventions were imporant, it also made work so much easier instead of having to carry things, you could just use the pulley which was less strain on the human body and less chance someone could get hurt.
Gettysburg. That's the answer.
Answer:
Germany was once again crippled by reparations, America and the USSR became world leaders and were even called the "super powers", and Israel was established in Palestine.