Talk:United States rankings

Please expand
I just created this article per discussion on the United States talk page. Please expand this article! For each rankings the following should be provided: Again, please expand this article (I'm quite busy in real life at the moment). Thank you!  Signature brendel  23:54, 19 September 2007 (UTC)
 * Waht criteria was used to create the ranking?
 * Who created the criteria & conducted the study?
 * Why the study was conducted?
 * Critizism and applications of the study?