Which of the following were policies supported by the radical republicans after the civil war? select all that apply.

amnesty to confederates who took the oath of loyalty to the union
the creation of the freedmen’s bureau
the black codes
the impeachment of president johnson

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.