The Missouri compromise was nullified by the Kansas-Nebraska act. This act allowed the people in each state to determine whether or not slavery would continue within their state.
Abolitionist John Brown was executed because of his attempt to seize the arsenal at Harper's Ferry. John Brown led the Harper's Ferry raid.
He stated that he did not feel like rejoicing because the people he fought against had fought valiantly and full of pride for their cause and never faltered. He did add that although he admired their strength of belief, he did believe that the cause they chose was the worst cause in the history of mankind and that they were in the wrong.