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The Act, part of the Compromise of 1850, posed a serious threat to both runaway slaves and free blacks residing in the North.
When abolitionists and other northerners interfered with the enforcement of the Fugitive Slave Act, southerners accused the North of reneging on the of 1850.
The expansionist spirit of Manifest Destiny was reborn in the 1850s as the movement.
America's expansionist spirit in the 1850s encouraged to try to gain control of Nicaragua and George Bickley to attempt the conquest of Mexico.
Stephen Douglas believed that would prevent slavery from expanding into the western territories.
The so-called of the South, alienated by the antislavery opinions of northern Whigs, switched their loyalty to the southern wing of the Democratic party in the 1850s.
Two new parties emerged from the collapse of the Whigs, and of the two, only the party had support in both the North and the South.
Proslavery activists called crossed from Missouri into Kansas and helped elect a proslavery territorial legislature there in 1855.
In retaliation for the sack of Lawrence, , an antislavery extremist and his followers murdered five proslavery men at Pottawatomi Creek, Kansas, in May 1856.
In 1856, John Fremont became the party's first presidential candidate.
The Dred Scott decision was directly contrary to the basic position of the party on the question of slavery in the territories.
The controversy over the Lecompton Constitution caused a split within the Democratic party between the followers of President James Buchanan who supported it, and Senator who opposed it.
During their 1858 debates, in what was called the , Abraham Lincoln got Stephen Douglas to argue that, regardless of the Dred Scott decision, settlers could use local ordinances to ban slavery from their territory.
When his effort to capture the Harpers Ferry arsenal failed, was arrested, tried for treason, and hanged.
When the Democratic party split in 1860, the northern Democrats nominated for president, and the southern Democrats nominated Vice-President John C. Breckinridge.
