Abraham Lincoln is a war criminal.
States should be allowed to secede and not be persecuted.
If the Federal Government violates its restrictions enforced by the Constitution then it has violated the contract and a state has the legal right to secede from the union. The Federal Government is an evil aggressor if it, in response to violating its own contract to govern, declares war on a seceding state or sends armies against it.
The Brits likely would have invaded again to take back the fractured US territory.
They really were in no position to do so by 1850 on up. After the war of 1812 failing, that was the last concern on anyone's mind.
If they could do that, why wouldn't they have invaded DURING the civil war?
The South was plenty ready to defend itself. They actually killed more union soldiers than union soldiers did Confederates.
British would not have stood a chance trying to battle the Confederacy.
Certainly was. To keep peace and address the South's concerns, Lincoln could have given incentives to the South to free slaves over a course of years.
For each slave freed, a plantation owner could receive a subsidized loan to purchase industrial farm equipment or the Federal government could have agreed to purchase crops or subsidize wages to farm hands so that they were not technically slaves anymore.
It was only a matter of time before industrialization negated the need for slave labor.
In fact, I credit the industrial revolution as the primary reason slavery ended worldwide. Not because people suddenly became more moral. The regions of the world that still utilize slave labor are likely poor and lack the industrial equipment.