<human>:  In the book, ‘Across the Rocky Mountains’, why did the author use the word ‘soon’ so many times?
<bot>: “Soon” is an adverb that means “immediately” or “very soon”. The author used “soon” because he was trying to describe how long it took for the pioneers to travel across the Rocky Mountains. The author was trying to convey the sense that it was very difficult to cross the Rocky Mountains.