The Abolitionists were a diverse group of individuals in the 19th century who advocated for the immediate end of slavery in the United States. This movement included both black and white activists, such as Frederick Douglass, William Lloyd Garrison, and Harriet Tubman, who worked through various means, including speeches, writings, and organizing rallies. Their efforts played a crucial role in raising awareness about the moral and humanitarian issues of slavery, ultimately contributing to its abolition with the 13th Amendment in 1865. The movement also laid the groundwork for subsequent civil rights efforts.