It was a law passed in 1854 that opened the northern part of the Indian Territory to American settlers. However, it repealed the Missouri Compromise by using popular sovereignty. This act, designed by Stephen Douglas, reopened the question of slavery in the territories and created the Kansas and Nebraska territories. The result was that pro- and anti-slavery talks flooded Kansas, leading to a bloody civil war there. It was then denounced as a triumph of the hated slave power.