Let's put it this way: if you removed slavery as an issue, would there have been any reason for the Southern states to secede, would there have been popular support for it in those states? If we removed abolition as a radical issue, would there have been any incentive to secede?
Clearly, the answer is no to the above. Whatever regional conflict or divergence in interests, the government under the Constitution has shown itself capable of handling, before and after. Only slavery was too big, too crucial, too basic to the meaning of America and what it means to self govern.
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interesting alt-history thought: Let's say Obama was elected in a highly racially polarized time, where a certain block of states had an 'whites only' policy, one that had been extremely controversial since the beginning of the country. As Obama is sworn in, the white only states one after another secede. There are still some important states on the fence - say, Pennsylvania and New Jersey. Obama, coming into office must deal with this mess... he's probably not going to make the first issue be about his race, but rather about the duty to the Constitution he is sworn to uphold. He needs to keep PA and NJ from joining the other break-away states.
Once the war has run its course - and Obama has made his Integration Proclamation: that no state may deny a citizen a place to live, work, and pursue liberty and happiness based on race or color of skin - the White States insist the war wasn't about race at all, it was about the right of the people, in the face of tyranny and overbearing government, to declare themselves free and self-governing, that this inalienable right is a founding principle of our country, etc etc.
Last edited by Nesster; 12-21-2010 at 08:10 AM.