Answer:
The Kansas-Nebraska Act allowed each territory to decide the issue of slavery on the basis of popular sovereignty. Kansas with slavery would violate the Missouri Compromise, which had kept the Union from falling apart for the last thirty-four years. The long-standing compromise would have to be repealed. While the Missouri Compromise and the Compromise of 1850 came about due to the debate over the expansion of slavery into new territories, the Kansas-Nebraska Act focused on the economic future of western states.
Step-by-step explanation:
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