I always wondered why Brazil stayed whole while the Spanish land became separated after there independence was declared. Thank you to anyone who can answer this question.
You can read in these links: http://www.reddit.com/r/AskHistorians/comments/17lhqw/in_south_america_why_are_spanishspeaking/
http://www.reddit.com/r/AskHistorians/comments/202slv/why_did_the_spanish_colonies_in_south_america/