Missouri Compromise By Kara Plotner Jan 8, 1818 Missouri petitions to become a state of the Union, instead of being a territory. Missouri petitions to become a state of the Union, instead of being a territory. Period: Jan 8, 1818 to Aug 10, 1821 Missouri Compromise Mar 6, 1818 Missouris petition is presented to the house Feb 13, 1819 amendment reequiring Missouri to not introduce slaves into the territory Feb 17, 1819 House passes Missouri Statehood Bill Mar 3, 1820 Missouri admitted to U.S as a slave state Mar 3, 1820 Maine admitted to the U.S as a free state Aug 10, 1821 Missouri is admitted to the Union
