Need an example of Expository Essay of learing from the past Please

What is one way that the author makes a distinction between the first transcontinental railroad and the first transcontinental passenger flights in 1936

Read this passage: i think of you daily, my darling, especially when it’s dark and the other men in the foxhole become silent. i like to pretend that the gunfire is a fireworks display and that you are here with me to enjoy it. who is the intended audience for this passage? a. the writers girlfriend at home b. the writers fellow soldiers c. the writers mother and father d. the writers commanding officer

“to build a fire” what wild idea does the man conjure up as a last resort?