Answer:
There's a variety of reasons. After the war, the south was quite literally, war torn, meaning everything was demolished or burning to the ground. After a war, both sides don't suddenly start accepting each other, and the civil war is no exception, there was a bunch of resentment back then due to the calamities of war.
Explanation:
Screwed up time but necessary
The appeasement made his hopes for imperialism stronger. This made the war possible.
Explanation:
The appeasement policies on Germany by the Allied powers meant that they were in the middle of an expansion spree and Hitler's popularity had soared because of it.
As the other nations did not do much to prevent it the Germans were hoping they would not care when the invade other nations too.
This became the root of the conflict as when the nations retaliated Germany locked down and started the war against them for which it had prepared more than the others,