Jeebus dingus - we’ve been over this a thousand times. The north went to war because the south went to war against them. It was the south who went to war to protect the Peculiar Institution of slavery.
The North was asked to leave and refused. They were an unwelcome "guest" who refused to leave after the homeowner made it very clear that they were not wanted there.
Rather than do the decent thing, they sent a war fleet with orders to attack.
The South did what any rational person would have done under the circumstances.
It was the south who went to war to protect the Peculiar Institution of slavery.
It was the North who went to war to protect the *MONEY* their power brokers were making through trade with Europe which the South was about to rip away from them.
The "We started a war to free the slaves" is just bullsh*t. They started the war to protect their revenue streams.