Missouri Compromise (1820) -- A Congressional bill which provided for the admission of Missouri to the union as a slave state, while prohibiting slavery in any area of the territorial Louisiana Purchase north of the 36'30" parallel.

Compromise of 1850 -- A series of Congressional bills which admitted New Mexico, Utah and California into the Union "with or without slavery, as their constitution may prescribe"; abolished the slave trade in the District of Columbia; and adopted a stricter fugitive slave law.

Kansas-Nebraska Act (1854) -- Allowed the status of slavery in the territories to be decided by the people as represented in their legislatures (popular sovereignty), effectively overturning the Missouri Compromise.

Union blockade -- Ordered by President Lincoln in April, 1861. Designed to take advantage of the North's overwhelming naval superiority to hinder Southern ports from importing and exporting goods and war materiel. By 1865, almost 500 ships patrolled Southern waters, cutting Confederate trade to one-third of its antebellum level.

liberty cap

Harper's Ferry raid -- John Brown's quixotic, disastrous, yet highly symbolic .....

personal liberty laws black laws three-fifths clause fugitive slave Act popular sovereignty