How did white southerners justify secession in 1860?

How did white southerners justify secession in 1860?

For this essay, look at primary sources related to the decision of southern state governments to secede from the Union. The essay should make an argument answering the following question: How did white southerners justify secession in 1860? The argument must be based on primary source analysis. MUST use quotations and citations from at least two primary sources cited in CHICAGO style and with a Works Cited page.