I wonder what would of happened had the Trent Affair not even happened? Would Mason and Slidell have made much difference?
Had the
Trent Affair not taken place, Mason and Slidell would have received little comment at all. As it was Mason was essentially irrelevant in Britain, while Slidell accomplished more because he had pre-existing connections in France. His daughter was married to Baron d'Erlanger, which netted influence in the banking houses of France, while knowing Lucien Arman allowed him to secure contracts for warships, though IIRC none were delivered before wars end.
Yes, that their names were heard of in the chancelleries of Europe at all. If Wilkes has possessed the sense to leave well enough alone the likelihood is that they would have been impolitely ignored. The civil war in the United States was a political hot potato that Britain and France wanted to leave well alone. An assault on sovereignty on the other hand was something that could not be ignored.
Wilkes showed a stunning lack of sense (one echoed by the entire country for a time) which pretty much ensured a rupture would take place if not handled tactfully. By itself, the Civil War was not a major cause of concern to Europe, but if the US did feel like intruding on European issues the European powers were pretty much obligated to respond. And in this instance the US would have been largely powerless to stop a united European intervention.
I think sadly I find your analysis the more convincing. The South had quite extraordinary hubris even for an age when such hubris was almost an obligation among the ruling classes of nations and would be nations. That combined with the fact that the British here have been drawn into the fight for reasons of their own and that preserving slavery was the defining cause of the war for the South pretty much means they will do what they can to hold on to it.
Mind you the post war situation will see them come under increasing international pressure without the protection of the United States. Another question though is the fate of those slaves held legally within the Union at this time, when slavery was abolished within the rebel states the clock was set ticking for its abolition within all states but here it may remain uncomfortably long in the border states. A very ugly outcome but all too possible a one in this scenario.
My reading is that even with British pressure, the South here, as yet unhumbled, will have zero reason to even consider compromising on their peculiar institution. With the war only two years old for the CSA, and one year for the British, neither party have a vested interest in pushing the issue one way or another.
However, I have also read that the British felt that if the South was independent, the liberal order of Europe could put pressure on them to enlighten them into freeing their slaves. They felt that this was why the tsar had emancipated the serfs, and they felt that this would lead to the emancipation of slaves in the Americas. The idea was an independent South, free of the sectionalism of the North would be more open to this. An unlikely thing, but you can see why they thought that.
And, I might add, what they truly wanted. Sure, they wanted their slaves, but they'd give them up in order to have independence.
Independence without slavery wasn't an option for the Confederate elite. There is a reason they only
considered arming slaves when Grant was knocking on the doors of Richmond in March 1865 as the nation fell apart around them. The Cleburne proposal was roughly shot down in 1864, and there wasn't any broad based support for arming black troops as it would "contravene the principals for which we fight" according to one officer. As it was, even this vote barely passed, the House voted 40-37 and the Senate 9-8 and it is unlikely the measure would have passed if not for Lee's personal intervention. Even then it still had firm opposition, Robert Toombs writing: "
In my opinion, the worst calamity that could befall us would be to gain our independence by the valor of our slaves, instead of our own… The day the army of Virginia allows a negro regiment to enter their lines as soldiers, they will be degraded, ruined, and disgraced. But if you put our negroes and white men into the army together, you must and will put them on an equality; they must be under the same code, the same pay, allowances and clothing… Therefore, it is a surrender of the entire slavery question."
Making matters worse I think, is that this measure did not stipulate whether the slaves would be freed if they served. Ultimately it was decided freedom would be to the masters on whether after their term of service the slaves would go free or not.