The Missouri Compromise of 1820 aimed to balance the number of free and slave states admitted to the union by admitting Missouri as a slave state and Maine as a free state, and designating the Louisiana Territory north of Missouri's southern border as free territory. The Compromise of 1850 admitted California as a free state, banned the slave trade in Washington D.C., and allowed popular sovereignty to determine slavery in other territories, while also strengthening the Fugitive Slave Act. The Kansas-Nebraska Act proposed creating Kansas and Nebraska territories and allowing popular sovereignty to determine their slave or free status, upsetting the North but pleasing the South.