The document discusses the development of the antislavery movement in the United States from the late 1700s to the 1840s. It describes how abolitionist societies formed in the North starting in the 1790s to advocate ending slavery. Abolitionists had both religious and political reasons for opposing slavery, believing slavery violated principles of equality and natural rights. The movement grew more organized over time, with abolitionists using newspapers, speeches, and the Underground Railroad to help slaves escape to freedom. Key figures included Frederick Douglass, Sojourner Truth, Harriet Tubman, and William Lloyd Garrison. Disagreements also emerged within the movement over appropriate tactics and the role of political action.