<u><em>A sachem is the chief or leader of a tribe, and having anyone of your community do an act of defection (change loyalty to the opposite side) is the beginning of lots of issues, those including: treason, increasing number of deserters, a weakening tribe, etc. Those are the reasons why a sachem should be concern about defection.</em></u>
Answer:
This poem is about our tongue, how it can cause trouble and make peace, how it can help build someone up or how it could destroy someone's moral forever.
Because different events happened, character changed and grew
O' Henry's choice to have Jimmy write the note to Bob <em>provides the reader with insight into Jimmy's character and illustrates how different the two men are after twenty years</em>. After this time, Jimmy has become a police officer and Bob, a famous criminal. <em>They used to be friends when they were younger</em>. But when they meet after twenty years, Jimmy realizes that his friend is a known criminal who is being searched for, and, as he used to be close to him in the past, <em>he cannot arrest him on his own</em>, so he looks for another police officer to arrest his friend.
