The correct answer is the Utah territory. This was done as a compromise on allowing new states into the union. The states in the region actually did support slavery and the vote passed even though it had been previously forbidden. This was because it was in the south where slavery was a common thing.
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Answer: http://bostonreview.net/war-security-global-justice/elaine-scarry-racist-foundation-nuclear-architecture
Explanation: should find your answer somewhere in here!
