Explanation:
As per the question, the author's key purpose of including this paragraph include 'to inform the reader about the location' and 'to entertain the readers by showing how dramatic the situation is.
1. The automobile was an affordable way for Americans to travel. Many Americans had automobiles before the had a proper toilet. 2. The economic "boom" was called the Roaring Twenties. The contributing factors were automobiles, movies, etc. 3. President Coolidge believed in Federalism.
I hope that I got that right. :)
The answer is b.the United States was recognized as a world power
