In the South of the 1830s, there was a growing dependence on slavery to support the economy of the region. During this decade, slave owners also developed a new sense of fear and mistrust of slaves following the well-publicized slave rebellion of Nat Turner in Virginia. In this climate, lawmakers at the state and local levels enacted new laws to regulate both slaves and free blacks. In Tennessee, laws were passed that forbade free blacks to enter and live in the state.
In 1834, a state constitutional convention took away the right of free black men to vote in Tennessee. An 1836 law against incendiarism meted out prison time for anyone who produced, circulated, or possessed materials that might encourage resistance to slavery. By 1850, when the United States Congress passed the Second Fugitive Slave Law, the sectional divisions over slavery in Tennessee were wide and bitter. The Underground Railroad in the state operated in this climate.
Tennessee's location, geography, and diverse population contributed to Underground Railroad activity within the state in the decades prior to the Civil War.
The sectional differences, based on geography, economics, and politics, were striking. In East Tennessee the ridges, valleys, and mountains allowed only small farms. Large row crops and a plantation economy were not possible because of the geography. Therefore, while slavery did exist in these counties, only 1 in 12 people was a slave.
In Middle Tennessee, where larger farms and some plantations existed, agriculture on a large scale was an important factor in the economy. Every third person was a slave.
West Tennessee, where the terrain flattens out between the Tennessee and Mississippi Rivers, was well suited to growing long rows of crops. Here, where plantations covered hundreds of acres, the slave population was large. Three or four of every five persons, depending on the county, was a slave.
By 1860, slaves made up roughly one-fourth of the population of Tennessee. Slave trading was lucrative, and markets in Nashville and Memphis prospered.