The correct answer to this open question is the following.
Although it seems the question is incomplete because it does not include any specific course, references, lessons, or contexts, we can comment on the following.
One of the topics could have been the role of the Federal government in helping or protecting the US citizens in many aspects such as legislation that protected workers in the industries. Or legislation about the systems and standards of quality in the food industry.
We can say that with the pass of time, things have changed for the benefit of the citizen. Today we see a much notorious commitment of the federal government to create the kinds of legislation that protect workers, the elderly, professionals, children, and many more groups in society, knowing that citizens play a more active role in demanding what is right and closely follow their representants activities.