What was the period to disunion?

The period of disunion in the United States primarily refers to the years leading up to the Civil War, particularly from the 1850s to 1861. This era was marked by escalating tensions over issues such as slavery, states' rights, and economic differences between the North and South. Key events, including the Kansas-Nebraska Act, the Dred Scott decision, and John Brown's raid on Harpers Ferry, intensified divisions. Ultimately, the election of Abraham Lincoln in 1860 prompted several Southern states to secede, leading to the outbreak of the Civil War in 1861.