The Compromise of 1850 contributed to the start of the Civil War by establishing the fugitive slave law and making California a free state. These increased sectionalism by the north opposing the Fugitive Slave Law and the South not wanting California as a free state.
The fugitive slave law increased sectionalism between the north and south by the north, especially abolitionists, becoming outraged that slaves could no longer become free in the United States.
This contributed to the start of the civil war by making most northerners oppose slavery through describing the physical and emotional tortures of slavery.
The Kansas Nebraska Act helped to start the Civil War by showing that tensions were high enough that many deaths happened over the issue of slavery. This showed that only war would solve this issue.
This contributed to the start of the Civil War by showing violence over the issue of slavery. This occurred during Bleeding Kansas which also was trying an alternative way to establish slave or free states. This contributed to sectionalism by showing that violence would come from an alternative solution to slavery.
The Dred Scott decision contributed to the sectionalism between the north and south by establishing that slaves were the equivalent to property. This made abolitionists in the north outraged, and contributed to sectionalism through this.
This contributed to the start of the civil war by showing that some abolitionists were willing to kill over the issue of slavery. This attack made sectionalism increase by the south feeling as if they must protect their right to have slavery and feeling more strongly toward it.
This contributed to the Civil War by electing Abraham Lincoln, who opposed slavery. This outraged the south because it meant that the north would be fully opposed to slavery.
The confederacy forming contributed to the start of the civil war because it meant that the south and the north had such great sectionalism that the south had left. This meant that tensions were high enough to start a war from them.