The answer is option C. The Kansas Nebraska act repealed the Missouri compromise.
The Missouri compromise was repealed by the Kansas-Nebraska act in the 1854.
The Missouri compromise arose due to issues that were coming up about slavery. A law had been passed that had put Missouri as a slave state in the Union.
This compromise was on for a period of more than 30 years until the Kansa-Nebraska act that was in place in 1854 repealed it. The compromise was ruled as unconstitutional in 1857.
The Kansas-Nebraska act made for provision of two new territories as well as popular sovereignty.
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