Why did Adichie tell the student that it was a shame that young Americans were serial murderers? What was different about Adichie’s understanding of America versus the student’s understanding of Nigeria?

Read the lines from "when i have fears" and answer the question. when i have fears that i may cease to be before my pen has glean'd my teeming brain, before high piled books, in charact'ry, hold like richgarners the full-ripen'd grain . . to fully understand the metaphor keats uses in these lines, readers must know that "garners" means the things that are harvested the places where harvests are stored the praises one receives for abundant harvests the people who own the harvests