"I suppose that a good indication of independence is whether or not other people agree with you. And in the case of the confederacy not a single country in the entire world considered them independent. So the state can claim it's a soverign nation, there is nothing to stop it."
So if all the members of the United Nations suddenly decided that they didn't "agree" that the United States was a sovereign nation it would cease to be one. Interesting, your logic.
Your logic is even more "interesting" since no other sovereign EVER recognized the Confederacy, while the United States sovereignty is unquestioned. Try again.
So if all the members of the United Nations suddenly decided that they didn't "agree" that the United States was a sovereign nation it would cease to be one. Interesting, your logic. Nah, but it is in keeping with your logic. There is a difference between a country which has existed for over 200 years, and a country that existed only in your imagination.