Inciting force; The event or character that triggers the conflict. or rising action.
I think perhaps that the influence the bloody American civil war had on subsequent literature would probably be relative to the hard realities of the battlefield and life in the army camps as experienced by the ordinary e a soldiers on both sides of the conflict as opposed to the lofty ideal of opposing slavery could be a reason why realism returned to American literature.
Explanation:
Judging someone/something on the outside can lead to something completely different in the inside.
Thats what I think.