How does callaghan use indirect characterization to create tension between the two characters

Read this excerpt from leah missbach day's foreword to wheels of change.as wbr's resident photographer i am privileged to see firsthand the impact bicycles have on the lives of our recipients.why does the author include this excerpt?

What is implied in this sentence from mark twain's "the £1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.

Discuss the theme of outcasts in these chapters in at least two hundred words. what does it mean that the church takes in people that the clan rejects? how is nwoye an outcast? how does the clan treat the missionaries as outcasts?