Compromises on Slavery Compromise: Missouri Compromise of 1820 There was a debate about whether new western territories would be __________ states or __________ states. The Missouri Compromise added _________ as a slave state and ________ as a free state. This helped to balance slave states and free states. In 1850, California entered the United States as a _________ state. Compromise of 1850 In return, ___________ southerners demanded stronger fugitive slave laws. Southwest territories would decide the issue of ___________for themselves. Kansas Nebraska Act, 1854 The __________ in each territory could decide whether to allow slavery or not. This was called popular sovereignty.