Which of the following events influenced the start of realism in american literature.
the crimean war
the franco-prussian
the us civil war
the spanish american war

The US Civil War

Explanation:

Realism refers to a genre in literature that bases on the forces of nature, government and war, all of them confronted to the common man. These authors wanted to differentiate from the romantic ones, who focused on emotions, imagination and the individual. Realism authors wanted to represent in a faithful way real life and actuality through fiction. It became popular in American literature between 1860 and 1890, when the country was trying to recover and unite after the Civil War. Inequalities were everywhere, the increase of industrializationa and immigration were important topics to write about.

i guess you are missing the idea that has to be supported, am i right?