They seized federal property, including arsenals, and only months later offered to pay for it. Why not try this yourself and see what happens.
Actually they sent a delegation prior to the firing on Fort Sumter in April where they offered to pay for federal property within the Confederacy and pay their portion of the national debt, but were rebuffed by the Lincoln administration. Again, ignoring that there was a peaceful way to handle the situation is patently dishonest. Lincoln was willing to go to war to force the southern states to remain in the Union and pay their taxes and the newly passed Morrill Tariff.
Hello? Where did I ignore that there was a peaceful way to handle the situation? Certainly there was, the USA could have caved to petty terrorists.
The southerners took the federal property in December. In April they offered to pay for it. Again, I invite you to try it and let us know the outcome.
They actually didn't take the federal property until April. If they had taken it in December they wouldn't have been firing on themselves in April. And your use of the term terrorist is noted, but it's yet another example of that word having no meaning. It's simply applied to people you don't like.
You are confused. They took federal property in December. Look it up. Because they took more in April doesn't mean they took federal property the previous December.
Are we referring to Fort Sumter specifically, or federal property generally? I was under the impression we were discussing Sumter. Though I would advise instead of saying "look it up," you should provide a link when discussing something so that people know exactly what you're referring to. Regardless, yes, the Confederates took federal property. They also offered to pay for it, which means that the war was unnecessary. But Lincoln wasn't concerned merely with the federal property, except as an extension of his actual aims, but rather wanted to force the south to pay the tariff. For that, he needed to go to war. It's hard to imagine how anybody would have been worse off if Lincoln had simply let them go.