i have to do an essay question on (how colonists went from considering themselves british subjects to identifying themselves as americans over 17th and 18th centuries) and i have my 3 points ( self-governence, social mobility, and better leadership..) but i cant find where it talks about social mobility in the book....(and social mobility is a switch in social class) http://www.google.com/search?hl=en&q=define%3Asocial+mobility [4]

can anyone helP? please?