Yes I read it. I don’t think it is totally accurate tho the Confederate governments did often ensure that Slavery was to be respected but it was not the reason for the war.
Lincoln said, and quite clearly too, that he did not think it was about slavery but preserving the Union.
The is why the Northern Soldiers called themselves “The Union” side and not the slave freeing army,
The Confederates always said they were fighting for their states which meant states rights even if they didn’t say it.