What would it take for the beginning of a civil war?

Listen, I know wars are horribly bad. I'm really sorry even asking such a question.

I'm Canadian. It seems that the fascists are set on military action against Greenland. I'm highly afraid that we're next. So I'm hoping the following happens in order:

1. No wars. Somehow, legally the fascist executive is stopped. This unfortunately seems unlikely...
2. They get bogged down in a war elsewhere. This prevents them from coming after Canada. I know this is me being extremely selfish, but whatever.
3. A civil war begins. No one has to worry about being invaded.

So my question is related to the third possibility. What could start a civil war? Could an invasion of Greenland and the following economic collapse (hopefully caused by the EU dropping US treasuries) be the spark?