Missouri Compromise was a measure worked out between the North and the South and passed by the U.S. Congress that allowed Missouri to be admitted as the 24th state (1821). It marked the beginning of the prolonged sectional conflict over the extension of slavery that led to the American Civil War.
The Missouri compromise reconsidered: Antislavery rhetoric and the emergence of the free labor synthesis
Zeitz, Joshua Michael. Journal of the Early Republic; Philadelphia Vol. 20, Iss. 3, (Fall 2000): 447-485.
Earle, Jonathan. Magazine of History; Bloomington Vol. 25, Iss. 2, (Apr 2011): 8-13.
The Maine and Missouri Crisis: Competing Priorities and Northern Slavery Politics in the Early Republic
Mason, Matthew. Journal of the Early Republic; Philadelphia Vol. 33, Iss. 4, (Winter 2013): 675-700.
The Missouri Compromise Reconsidered: Antislavery Rhetoric and the Emergence of the Free Labor Synthesis
Journal of the Early Republic, Vol. 20, No. 3 (Autumn, 2000), pp. 447-485 (39 pages)
MISSOURI COMPROMISE, 1820. - Map of the United States showing the free and slave states and territories following the Missouri Compromise of 1820.
Fine Art. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/140_1648865/1/140_1648865/cite. Accessed 18 Nov 2021.
Title-page of the printed speech by Rep. James Tallmadge (N.Y.), 1819, in the House of Representatives moving for the gradual abolition of slavery in Missouri.
Fine Art. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/140_1644720/1/140_1644720/cite. Accessed 18 Nov 2021.
The home of Missouri's first governor, Alexander McNair, at the time of the Missouri Compromise in 1820.
Wood engraving, 19th century. Fine Art. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/140_1629240/1/140_1629240/cite. Accessed 18 Nov 2021.