ch.15 By adriannae21 Dec 24, 1819 missouri crisis Dec 24, 1820 Missouri Compromise Dec 24, 1820 missouri crisis Dec 24, 1840 James K. Polk wanted to extend the 36 degree 30' line to west coast Dec 24, 1840 Stephen Douglas entered Congress Dec 24, 1848 US added more than 500,000 sq. miles of land as result of winning Mexican-American War Dec 24, 1850 federal marshals arrested African American James Hamlet Dec 24, 1850 Compromise of 1850 Dec 24, 1852 Uncle Tom's Cabin was published Dec 24, 1852 Pierce won the election Jan 24, 1854 Kansas-Nebraska act was introduced Dec 24, 1854 Anthony Burns was arrested in Boston Mar 24, 1855 elections for the Kansas territorial legislature were held in Sep 24, 1856 new territorial governor arrived and began to restore order Dec 24, 1862 When Congress started approving things