How does Lincoln put responsibility for the war on the southern states?

the cause of the war,” as Lincoln put it in his Second Inaugural Address, emancipation would make relations between blacks and whites the greatest challenge in reconstructing self-government in the American South.

Explanation:

general allotment act (dawes act) february 8, 1887

amendment to the dawes act, february 28, 1891

commission to the five civilized tribes (dawes commission), march 3, 1893

if i am correct the answer is going to be a) the federal program of reconstruction ended.