Which South Carolina governor and senator defended slavery on the ground that every society needed its "mudsill," and blacks were the "mudsills" of the South?

Question

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James Henry Hammond was a prominent South Carolina politician who famously used the term "mudsill" to defend the institution of slavery, arguing that every society required a lower class to perform its menial labor, and in the South, this role was filled by enslaved African Americans.

Which South Carolina Governor and Senator Defended Slavery on the Ground