Why do some nations grow and prosper while others stagnate?

1- Why do some nations grow and prosper while others stagnate?2- How does the current US economic growth differ from the growth of at least two other leading economic powers today? Explain.Please feel free to perform your own research, in addition to the following suggested articles:Bureau of Economic Analysis:http://www.bea.gov/newsreleases/glance.htmUS Economy at a glance:http://www.bea.gov/newsreleases/glance.htOECD Journal: Economic Studies: http://www.oecd.org/eco/growth/economicstudies.htm