The last one. The south was known for farming so the last one doesn’t make sense
The second last sentence of the first paragraph is the key message conveying Lincoln's view that war was forced for the protection of the nation.
"<span>Both parties deprecated war; but one of them would make war rather than let the nation survive; and the other would accept war rather than let it perish."</span>
They have a division of specialization. I'm pretty sure thats the answer.
