I think that peace does not depend on the wealth or poverty, but depends on the heart of human beings. In wealth, often we can not live in peace because of concerns born of wanting to have more money, to ensure that we have, to ensure that nothing happens to the family or even often the concern for money becomes selfishness. At home, we often do not have enough to eat, but my kids say, "Mom, do not worry, still it's OK," then they give me the strength to continue and I think it also means peace, having people who support me and that I can support others.
I think the most important for there to be peace is love in families very often there is no time to give love needed by our children, and because of it then they grow rebellious and begin to look for other issues, and this is where they begin to grow without peace with themselves and unable to give peace to others.