In April, Thomas Jefferson wrote that the division of the country created by the compromise line would eventually lead to the destruction of the Union : The vote in the Senate was 24 to 20 in favor of compromise. The amendment and the act were passed in the Senate on February 17 and 18, 1820. The House of Representatives then approved the Senate compromise amendment, 90-87, with all the opposition of the representatives of the free states.  The House of Representatives then approved the entire Bill 134-42 with opposition from the southern states.  Although slavery had been a matter of division in the United States for decades, sectional antagonism had never been clearer and more threatening than during the Missouri Crisis. Thomas Jefferson described the fear as „like a bell of fire at night.“ Although the compromise measures seemed to solve the problem of the expansion of slavery, John Quincy Adams noted in his diary: „Take for granted that the present is only a preamble – a cover of a great tragic volume.“ The American Civil War turned into the American Civil War after the Missouri Compromise was repealed by the Kansas-Nebraska Act (1854) and declared unconstitutional in the Dred Scott decision of 1857. For decades, Americans have celebrated the 1820 Agreement as an essential compromise, almost at the sacred level of the Constitution itself.  Although the Civil War broke out in 1861, historians often say that compromise helped postpone the war.  The provisions of the Missouri Compromise prohibiting slavery in the former Louisiana Territory north of the parallel 36°30′ N were repealed by Stephen A. Douglas` Kansas-Nebraska Act of 1854.
The abrogation of the compromise sparked outrage in the North and triggered the return to politics of Abraham Lincoln, who criticized slavery and denied Douglas` act in his „Peoria Speech“ (October 16, 1854).  The Founding Fathers had included principled and timely elements in the founding documents […].