Lincoln, suborner of rebellion.
So I guess you were right -- there was a rebellion, only not the one you're talking about.
And as our colleagues have pointed out, the Confederates offered to negotiate compensation and the debt, which a) you refuse to acknowledge and b) Lincoln refused to discuss, because he didn't want to accord the departing States the sovereignty that was their due.
Lincoln, suborner opponent of rebellion.
Fixed it for you.