What if, in a means to divert the division over slavery, Lincoln decides to wage a war with another nation in an effort to bring the US together, in a time of war, instead of it splitting akin to the OTL.
So who could the USA pick on in late 1860 - early 1861?
Would this war be successful & the Civil War adverted as a result?
Or would the Southern States still secede meaning the Civil War is still fought at some point in time regardless?
Anything else?