1850–1870 Civil War era
The era that followed was a less harmonious one, in which abolitionists set up an Underground Railroad routes where escaping slaves, aided by Quakers and Abolitionists who believed in freedom more than their own liberty, made their way north to freedom. This helped to stoke tensions around this topic that partly led to the Civil War in the 1860s.
This touched Indiana relatively lightly, though most famously through the swashbuckling raids of John Hunt Morgan, events which are still remembered by the annual Sassafras Tea Festival.