belief that the US should own everything from the Atlantic to the Pacific

Northwest Ordinance of 1787

Let in Maine as a free state, Missouri as a slave state, and split the Louisiana Purchase along the 30'36 line

Called the "Great Compromiser"

Deal where John Quincy Adams became president and Henry Clay became Secretary of State

President Polk provoked this conflict because of his belief in manifest destiny

Originally caused by Americans who wanted to keep slaves in Mexico

After 11 years of independence...

James Polk

When one regions focuses on its needs instead of focusing on the needs of the whole nation

Created to protect American industry but made sectionalism worse

States' rights advocate who caused the Nullification Crisis of 1832

To declare something void

to withdraw from the Union (Union here means the Union of states that makes up the United States)

Sold the US territory in the southwest for $15million

Last time the US boundaries changed

Never became official but made Sectionalism worse

Made California a free state, made a stronger Fugitive Slave Act, banned the slave TRADE in Washington DC but allowed SLAVERY to continue in DC

A slave led other slaves in a rampage, killing about 60 white people, resulted in slave codes

laws intended to strictly control the actions of slaves

Committed by the same person who participated in the Pottawatomie Creek Massacre, made sectionalism worse

Refers to the battlefield-like situation after the failure of popular sovereignty

This was the spark that set off "Bleeding Kansas" and ended hope of popular sovereignty

The South loved it, it made more Northerners become abolitionists, the 14th Amendment responds to it