How is the USA a democratic society? How is it not?

Most democratic have a government with three branches : executive,legislative and judicial.in canada,the legislative branch is the

Compared with the executive and legislative branches

Why does c. wright mills identify critical thinking as one of the most important criteria for the development of intellectual craftsmanship? why is constantly being aware of the biased nature of your reactions and interactions (what c. wright mills calls self-reflexive) key to the development of that critical thinking? finally, why is keeping a file important, how can it lean to intellectual curiosity which can foster critical thinking and to develop a keen analytical mind?