The Civil War changed American writing in the following ways:
1. Writing became more realistic: Instead of idealizing situations, authors started to portray events, characters, and settings more realistically, reflecting the grim realities of war and its impact on society.
2. Writing centered on gallant acts of heroism and adventure: As a response to the heroic deeds witnessed during the war, literature began to focus on brave acts of heroism and adventurous tales, highlighting the courage and sacrifices made by individuals in challenging circumstances.
These changes in writing styles and themes were influenced by the experiences and aftermath of the Civil War, shaping American literature during that period.