Was the girl trying to say something about the US, or say something that nobody said before?
A I understand, narrowness is very useful in the latter case, because it gives you a topic about which others haven't already said everything. And Antony van Leeuwenhoek would agree that you could find details that are otherwise hidden.
Still, school essays rarely require you to write something truly original. I could write 500 words about "the United States" right now. So I feel that this is a sort of a bad example.
There's your disagreement. Get to analyzing.
Since Robert Pirsig put this very well, I’ll just copy down what he said. I don’t know if this story is based on reality or not, but either way, it’s true.