Does Capitalism help to build a more stable society?

I'm sure the answer to this is pretty obvious, but I am wondering if there's a real link between a society's stability and their economic systems. I think most would agree that the United States is one of the more stable countries around, and the US has a capitalist economy. The US economy has certainly had it's ups and downs over the years, but there have been some pretty significant improvements in standard of living for many people. Other countries like Sweden and Denmark seem to have a very stable society and are considered to be very good places to live, they have a mixed economy with a fair amount of socialist tendencies. Many third world countries are very unstable and have mixed economies, or sometimes command economy style socialist systems.<br><br>What's your take on this?