Abolitionists & Disunionists, Bringing on the War, Emancipation, Northern Culture Laid Bare, Prescient Warnings 
No Comments Deep Seated Hostility Toward the South
William Lowndes Yancey of Alabama pointed to the relentless pressure from Northern States for trade advantages at the expense of the rest of the country while resisting any increase of new States friendly toward Southern interests. It should be noted also that Southern States were “free States” like the North though with an African labor system – and Northern States were former slaveholding States with many employing wage-slaves.
Bernhard Thuersam, www.circa1865.org
Deep-Seated Hostility Toward the South
“Yancey now saw the dangers . . . divined in the combination of tariff increases, repeal of the Gag Rule, and especially the exclusion of Texas. “I can see in this a deeply seated hostility to the South – a disposition to circumscribe it – to surround it with people and institutions hostile to it,” he began. The Missouri Compromise, he reminded New Yorkers, gave the free States the bulk of western territories enough to make twenty-six new States, according to his calculations.
Once the Union admitted Florida as a slave State, Yancey pointed out that slaveholders had nowhere else to turn. And yet, the Texas annexation – with the possibility of dividing that region into five slave States – “frighten[s] Northern men out of their wits about the enormous preponderance which annexation will bring to the South!”
So, he concluded, while Maine pressed her lumber interests in Congress, western States called for federal internal improvements, Pennsylvania and New England sought advantage for their industry and New York for commerce, “the South but urges annexation as a protection against assailants! Do you not see the difference?”
[Yancey] asserted that Northerners would cut their own throats by harming the peculiar institution. It was the produce of slave labor, not free labor, Yancey claimed, that resulted in the commercial prosperity of New York. [And] Yancey correctly noted that the Constitution’s three-fifths provision that many Northerners blamed for increasing Southern political power actually limited representation. If Northerners forced the end of slavery, African Americans in the South would suddenly count as five-fifths . . . for determining representation in Congress.
(William Lowndes Yancey, The Coming of the Civil War, Eric H. Walther, UNC Press, 2006, pp. 81-82)