Things that happened before the story began are explained here

A. to transition the reader smoothly from one idea or moment intime to the nextob. to grab readers' attention and get them interested in the essay'smain topicc. to provide more supporting details about the essay's main ideasor topicod. to sum up the overall point of the essay and make a lastingimpression

Which of these rhetorical devices is most clearly used in the underlined portion of the text?

Why does hillenbrand include both the triumphs of louie and the ominous background on japan in the same chapter