it was to increase travel from east to west for those who wanted to escape the Dust Bowl. it runs from Chicago to Los Angeles & was a path to a Western Promise.
I think it is personification, because personification means to make non living things sound real, and the lines 149-151 follow that. “The taut gut vibrating hummed and sang a swallow’s note.”
The main thing to conclude from this description would be that "<span>The beggar is dressed in scarlet clothes" since this description does not apply to Robin.</span>
