You got the first part right but not the second. The south won several decisive battles early on but I don't think that anyone could claim a clear winner in 1863.
The war was about states' rights. More states' rights would give us a smaller, less over-reaching federal government.
The only "states right" that was at play was the souths desire to expand the slave trade beyond their existing state borders.
Slavery, as an institution was on it's way out in the South...
No it wasn't and the slavocracy blew up a nation in order to see to it.
Taxes... You're only looking at the one issue. That's NOT it - look at the taxes.
And, no, I can't spell.