Readers can learn about the mood of a story by looking at the tone of it. The mood refers to a literary element that evokes certain feelings in the reader. It can also be understood as the "atmosphere" of a literary piece. Tone, on the other hand, refers to the attitude of a writer towards a subject or an audience. The tone is conveyed through the choice of words of the author, which in turn conveys the mood.
Yes, the ideal that every US citizen should have an equal opportunity to achieve success. Through prosperity, through hard work, determination, and initiative.