USA HISTORY

Detailed explanation-1: -We know Thaddeus Stevens as an ardent abolitionist who championed the rights of blacks for decades-up to, during, and after the Civil War. With other Radical Republicans, he agitated for emancipation, black fighting units, and black suffrage.

Detailed explanation-2: -The Radical Republicans were a group of politicians who formed a faction within the Republican party that lasted from the Civil War into the era of Reconstruction. They were led by Thaddeus Stevens in the House of Representatives and Charles Sumner in the Senate.

Detailed explanation-3: -During the American Civil War, and later into the first part of Reconstruction, the leading Radicals were Thaddeus Stevens in the House, Charles Sumner in the Senate. After his election as president in 1868 Ulysses S. Grant became the leading Radical Republican.