Answer:
Thaddeus Stevens was a fierce opponent of slavery and dedicated his career to its abolition in the United States. He saw slavery as a grave injustice and a violation of basic human rights. Throughout his time in Congress, Stevens worked tirelessly to pass laws that would restrict and ultimately eliminate slavery. He was a vocal supporter of the Emancipation Proclamation, which freed slaves in Confederate territories during the Civil War, and he played a key role in securing the passage of the 13th Amendment to the Constitution, which abolished slavery throughout the United States. Stevens also fought for equal rights for African Americans, advocating for their right to vote and access to education. Despite facing strong opposition, Stevens never wavered in his commitment to the cause of abolition, and his leadership was crucial in ending the institution of slavery in America.