Lincoln’s Secretary of State William Seward promised the cotton-dependent British an early end to war with “Northern victories releasing the raw cotton” of the South to England. Seward’s claim that New Orleans would soon be under his control was quickly dashed, and all were aware that Southern plantation owners would sooner burn their cotton bales than allow them to fall into enemy hands. A desperate Seward then followed Virginia’s Royal Governor’s (Lord Dunmore) November 1775 edict to incite race war in the South, threatening both Britain and France that any aid to the American Confederacy would unleash a bloody slave uprising there. This would not only destroy Europe’s cotton source but also repeat the Haitian massacres of the early 1790’s which saw the slaughter of 4,000 white men, women and children. In retaliation, some 15,000 Africans were killed by the French.
Seward Insists Upon Servile War
“Fearing the growth in England, especially, of an intention to intervene, Seward threatened a Northern appeal to the slaves, thinking of the threat not so much in terms of an uncivilized and horrible war as in terms of the material interests of England. In brief, considering foreign attitude and action in relation to Northern advantage – to the winning of the war – he would use emancipation as a threat of servile insurrection, but he did not desire emancipation itself for fear it would cause that very intervention which it was his object to prevent.
On May 28, 1862, Seward wrote to US diplomat Charles Francis Adams, emphasizing two points: first, US diplomats abroad were now authorized to state that the war was, in part at least, intended for the suppression of slavery, and secondly, that the North if interfered with by foreign nations would be forced to unleash servile war in the South.
Such a war, Seward argued, would be “completely destructive of all European interests” and a copy of this was given to Britain’s Lord Russell on June 20th . . . and that any attempts a European mediation of the conflict would result in servile war unleashed upon the South. On July 13, Lincoln told Seward and [Gideon] Welles of the planned [gradual and compensated] emancipation proclamation and that this was his first mention of it to anyone.
On July 28, after Lord Russell reviewed Seward’s arguments, commented on the fast- increasing bitterness of the American conflict which was disturbing and unsettling to European governments, and wrote: “The approach of servile war, so much insisted upon by Mr. Seward in his dispatch, only forewarns us that another element of destruction may be added to the slaughter, loss of property, and waste of industry, which already afflict a country so lately prosperous and tranquil.”
(Great Britain and the American Civil War. Ephraim Douglas Adams. Alpha Editions, 2018 (original manuscript 1924), pg. 388-390)