Question

After he was president which individual described himself as the acutest, astutest and the archest enemy of southern slavery that ever existed

Answer 1

The individual who described himself as "the acutest, astutest and the archest enemy of southern slavery that ever existed" after his presidency was **John Quincy Adams**. He made such statements in the context of his strong opposition to slavery and his advocacy for abolition, particularly after his presidency when he became a prominent member of the House of Representatives. Adams was known for his fierce debates against the institution of slavery and his efforts to promote civil rights.