During the 1850's and early 1860's, Iowa, the westernmost free state bordering a slave state, stood as a bulwark of antislavery sentiment while the decades-long struggle over slavery shifted westward. On its southern border lay Missouri, the northernmost slaveholding state. To its west was the Kansas-Nebraska Territory, where proslavery and antislavery militias battled. Missouri slaves fled to Iowa seeking freedom, finding opponents of slavery who risked their lives and livelihoods to help them, as well as bounty hunters who forced them back into bondage. When opponents of slavery streamed west