I believe it means self government. If I remember right from that book, there was basically no government, so that means they had to take care of themselves because of no food, water, etc (until the end of course). I hope this helped. I wasn't too sure about this question, so hopefully its right!
Answer:
United: brought together, Divided: Brought apart
Explanation:
United means to for a group of something to be brought together. Divded means for a group of something that was once united to be broken up.
Its either disappears or escapes from the sight (although both kinda mean the same thing in a way)
She doesn't want him to know
Carelessly/ careless / carelessness