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Uh, some states tried to use the concept of nullification to keep slavery around and failed. Not exactly a shining endorsement.. edit: It's important to learn

• Clubber 9y ago
  As mentioned before, slavery was legal during the antebellum period, and Lincoln never publicly said he would abolish it (until he did). The political theory though is if new states are required to be slave-free, then the South would end up being suffocated by anti-slave votes over time. It's an interesting time to try to understand.