Western Europe in and post WWII would seem to apply.
Israel is pretty prosperous if you're Israeli.
The problem is that basically wherever you go in the world, you can find lack of peace and prosperity, and you can usually find some reason or another to attribute some blame to one power or another involved in the last major change. Any location you name will welcome a "what about X!?"
The whole world though, the whole of human civilization is now and has been for a long time on a significant upward trend in peace and prosperity. If you smooth out the bumps there is a very significant increase in every metric you could think was positive. Consistently. For centuries. Is that a result of world power using force? Probably to a significant extent.