http://www.youtube.com/watch?v=MkhZZfiVZR0&NR=1
http://www.youtube.com/watch?v=UpZBnzuSur0&feature=related
http://www.youtube.com/watch?v=R7yQemeBpzE&NR=1
http://www.youtube.com/watch?v=3Kr59I34tSc&NR=1
DEMOCRACIA, FEDERALISMO, LAICISMO,PLURIPARTIDISMO.