‘Interesting, the outrage was due to the fact, the emancipation was for those slaves in the confederate states only... ‘
That is true, but it was secondary to the outrage of the Southerners at having ‘valuable property’ (slaves) being taken from them without financial recourse.
Southern firebrands came up with what you mention here as a political afterthought.
Quite true.
I have to agree that a major effect of the action was to keep France and Britain at bay.