Under OTL conditions (i.e. the war ends in 1865 and shortly after Lincoln is assassinated, and Grant is elected in 1868) what are the most radical measures the Republicans can impose on the South following the civil war? IIRC some radical republicans proposed expropriating ex-slaveowners' properties and distributing the land among the freedmen. I was wondering whether something like that could ever come to pass. Also, how harsh could they get towards ex-confederates? Is permanent revocation of citizenship on the table? How about exile?