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The Mexican Cession was territorial concessions by Mexico following the Mexican-American War that halved the nation's size. This event lead to an increase in sectionalism due to it reigniting the debate over which states should be free or slave states

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The free soil party was a coalition of ex-whigs and independents that act as a single-issue party in favor of abolishing slavery. It added to sectionalism by being popular in the north but antagonizing the south as well as later forming the Republican Party.

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This election marked a point were slavery became a national debating point with the free slave movement running in an attempt to stop westward expansion of slavery which increased sectionalism by having different regions voting for different parties.

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The compromise of 1850 re-organized the territories that were annexed during the mexican cession, Oregon territory and Texas that eased tensions by officially deciding to which states would be slave or free states, as well as allowing for states to choose if they wanted to be free or slave

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Give the details of each part of this compromise

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A law that outlawed slaves running away from there masters to free states as a way of freeing themselves. This increased sectionalism by outraging the increasingly abolitionist north by showing the south has lots of power in the government still.

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A story that featured slaves which shows northerns, who mostly had never been to the south, the true horrors of slavery. This pushed the north to be overwhelmingly abolitionist which antagonizes the south.

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Franklin was elected in 1852 as a moderate on the Slavery issue but, in an attempt to unify the nation, listened to his southern advisors. This usually backfired and increased fighting within the nation which unified groups of states against other groups even more.

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The Kansas-Nebraska act was a law that established popular Sovereignty in the Nebraska and Kansas territories which allowed for these states to vote on whether they wanted slavery or not, practically nullifying the Missouri Compromise. This increased sectionalism by making northerners outraged by slavery extended above the previous line set by the Missouri Compromise.

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The republican party was founded out of a fear that slavery would expand into Kansas and Nebraska as well as a merging of several smaller parties. This increased sectionalism by founding a party that stood as a central authority against the imbedded democrats as a voting block.

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Violence that broke out between pro and anti slavery groups that had went to Kansas so that they could influence the state's vote on slavery. Marked the start of extreme violence over slavery in the United States (ignoring individual events like Nat Turner's Rebellion.)

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Representative Brooks, a pro-slavery Representative from North Carolina, nearly killed Senator Sumner, a abolitionist Senator from Massachusetts, with a walking cane after Sumner made a speech that insulted slave owners. Both congressman became hero's in there respective region which increased the divide in the nation.

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Buchanan was another moderate on the Slavery issue which increased sectionalism by allowing violence and sectionalism to continue to ramp up in severity by just ignoring the issue.

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Republicans made a strong showing in this election-shows that they are quickly gaining support (will win next presidential election)

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Dredd Scott was a slave who was taken to Illinois and Wisconsin by his master; These states being free states, Scott sued for his freedom. The supreme court ruled against him and said that Slaves were property hence not US citizens with rights. This increased sectionalism by inflaming the north's rage towards the control that pro-slave groups had in the government.

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The Lecompton Constitution was the 2nd of 4 proposed state constitutions of Kansas that was written from a Pro-Slavery perspective which never went into effect. It showed the increase in sectionalism by the issue of slavery still being at the forefront of Kansas' delayed entry into the Union even 3 years after the K-N Act.

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A failed raid at Harper's Ferry by John Brown, a radical abolitionist, that had the goal of securing guns to send to slaves so that a slave rebellion could take place. Ended in the death or capture of most raiders including the capturing of John Brown which lead to his execution. The execution of John Brown made him into the martyr in the abolitionist north which increased sectionalism.

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The election of 1860 saw the victory of Lincoln and the recently formed Republican Party. Lincoln was the first president to have a plan to contain slavery to it's current borders (as well as being a staunch abolitionist personally). Lincoln's election caused the secession of South Carolina by making them fear that slave states would lose power which, obviously, increased sectionalism.

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After the election of Lincoln, South Carolina succeeded even before his inauguration, fearing his slightly abolitionist campaign platform. This increased sectionalism by directly starting the US civil war which saw the north fight against the south.

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The Crittenden Compromise was a pro-slavery last ditch effort to stop the civil war by enshrining slavery into the US constitution which would make abolitionist efforts to abolish unconstitutional and ease southern worries about the abolishment of Slavery, the bill was never passed. This increased sectionalism by not stopping the civil war.