Originally Posted by The dream of rain

Content is really good but Innocent Hafeez, i think, you need to rephrase certain sub-headings like,"European/western culture and values," "Impact on American demography
Before advent: Land of Indians (sole group)
After advent: British people, Europeans, African-Americans (slaves),
persecuted religious minorities (Puritans)"[/B]
You can rephrase like, introduction of new culture, inclusion of Britons and African-Americans, and mixed ones... And, more.

And,your heading "Steps for self-government" is bit contradictory to me, because the question asks about impacts caused by British advent in America. So your heading gives a sense that you are referring to self-govt. by natives, which is not the case by then and now. You can replace it by giving a better face.