Why did the canning of Charles Sumner divide the North and the South before the civil war?

The caning of Charles Sumner in 1856 highlighted the intense sectional tensions between the North and South over the issue of slavery. Sumner, a fervent abolitionist, was attacked by Southern Congressman Preston Brooks in response to a speech criticizing pro-slavery advocates. This violent incident galvanized anti-slavery sentiment in the North, while the South largely viewed Brooks as a hero defending Southern honor. The starkly differing reactions underscored the deepening divide and growing animosity between the two regions, contributing to the escalating conflict that ultimately led to the Civil War.