How did the southern defense of slavery affect national politics after the 1830s?

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The southern defense of slavery deeply polarized the nation, particularly after the 1830s, as it effectively silenced any debate or criticism of slavery within the South. This rigidity and unwillingness to entertain discussions about the institution of slavery made it increasingly difficult to find any middle ground or compromise with the North, where abolitionist sentiments were growing. This division contributed to the escalating tensions that eventually led to the Civil War.

How Did the Southern Defense of Slavery Affect National Politics