The Union wasn't the power altering the state of the nation, the Southern States seceded and fired on Fort Sumter without justification, unlike the Thirteen Colonies. I see your official position is that no nation can ever have any right to put down a violent insurrection. It is good and necessary for people to rise against a tyrant, but that is not justified in this scenario unlike that of the Revolutionary War. Are all Europeans this colossally retarded or just Finns? I'm inclined to think all of them.
You should read history more carefully. The Colonists relentlessly provoked the British until they got what they were looking for, war.
https://en.wikipedia.org/wiki/Hugh_Percy,_2nd_Duke_of_Northumberland#American_War_of_IndependenceThe British commander in Boston, Brigadier General Hugh Percy was very sympathetic to colonial grievances etc.. and did everything in his power to diffuse the situation, but was provoked into war never the less.
The Boston Massacre was provoked as well, what started as a friendly snowball fight turned into someone throwing a rock at a British soldier's head and severely wounding him, getting the response they wanted, gunfire.
The US has a history of provocation leading to war for economic and territorial gains, the Mexican American War is another example of this.
"The presence of United States troops on the edge of the disputed territory farthest from the Mexican settlements, was not sufficient to provoke hostilities. We were sent to provoke a fight, but it was essential that Mexico should commence it. It was very doubtful whether Congress would declare war; but if Mexico should attack our troops, the Executive could announce, "Whereas, war exists by the acts of, etc.," and prosecute the contest with vigor. Once initiated there were but few public men who would have the courage to oppose it...."
- Ulysses S Grant
The Republican Party provoked a war with the South, plain and simple
( is anyone really surprised at Republicans provoking war at this point?). They gave up on attempts to peacefully resolve issues, resorting only to provocation and escalation by supporting radicals. If the North wanted to peacefully resolve the issue of slavery they could have boycotted slave produced cotton, instead they were the South's largest customer. They also could have flat out purchased the slaves freedom to compensate the South so they could transition into a more modern economy.
https://en.wikipedia.org/wiki/John_Brown%27s_raid_on_Harpers_Ferryhttps://en.wikipedia.org/wiki/Nullification_Crisis