"This book Confessions of an Economic hit man" by John Perkins is a good book to open the eyes of people to see the unsavory and coercive way that the US has assured a favorable environment within the Western Hemisphere for its interests. Basically, a tale of the carrot and the stick, reward and punishment for cooperating with the US and selling out their own people in a S.American or Central American country. Of course more brutal tactics exist that also are sponsored by the US via the School of the Americas teaching military and police forces of South and Central America how to brutalize their own people. Here is the full book in PDF format:
http://resistir.info/livros/john_perkin ... it_man.pdf