3. The author points out that America's "vast transformations have taken place in relative harmony, thanks to the uniquely American optimism" (Paragraph 23). Do you agree that optimism is
characteristic of the United States citizenry? Give an historical example to support your answer.

explanation:

i dont know what the answer so im making you laugh here's ya joke lol

i don’t know the story but to answer the fiest question about theme and   subject . theme is a debatable opinion about a subject while the subject is a topic the author deside's to stick with and use through out the book and in his/her writing