slaves and allowed officials to arrest those slaves in free areas.

Hamlet and Anthony Burns to gain sympathy for their cause.

1819–20 and the nullification crisis of 1832–33 by proposing compromises.

response, antislavery northerners formed a new party, the Free-

Soil Party, which supported the Wilmot Proviso.

cratic presidential nomination emerged

in 1852.

Louisiana Purchase into two territories—Kansas and Nebraska—and

allow the people in each territory to decide on the question of slavery.

was angry.

Senate.

attack the federal arsenal in Virginia and seize weapons there.

election in 1860.