B forced graduate schools across the country to integrate.
Hope this can help.
Andrew Johnson extended a general pardon of citizens of the South in the form of the grant of an amnesty, subject to several exceptions: officers or diplomats of the Confederate;those who left US judicial stations to help rebels;those above certain rank, such as Colonel; etc., in general denying the pardon to those who had more responsability in the rebellion.
There should be no interference with slavery in the states in which it already existed... not sure if correct .
California. I hope this helped you