The document discusses the abolitionist movement in the United States before the Civil War. Abolitionists strongly opposed slavery and fought for slaves to be freed. Their beliefs were influenced by reports of abuse on plantations and religious teachings that slavery was immoral. In the 1850s, the movement grew stronger as abolitionists published pamphlets and books like Uncle Tom's Cabin to expose the cruelty of slavery. John Brown's raid on Harper's Ferry in 1859, though unsuccessful, inspired many northerners to join the cause of ending slavery.