Immediately after the battle at Fort Sumter, the event that occurred regarding public sentiment was Increased military action.

Immediately following the battle at Fort Sumter, public sentiment in the North shifted dramatically toward increased military action. The Confederate attack served as a rallying point, igniting a surge of patriotic fervor and support for the Union cause. Many citizens were inspired to enlist in the military, responding to calls for troops and demonstrating a commitment to preserving the nation. This heightened resolve marked a significant turning point, as people across the North recognized the seriousness of the conflict and the necessity for a robust military response to counter the rebellion. The battle effectively unified the North in its war efforts.