So? You can declare your independence if you want. Set yourself up as a benevolent dictatorship, make a flag, coin money and print stamps, and even declare yourself Grand High Queen of the Universe. But unless people start bowing and scraping and calling you “Your Majesty” then you aren’t queen of anything. You’re just another nut.
I believe it was in the original constitution, the right to secede. It was amended after the war.
Which amendment was that? You've just proven that you don't know what you're talking about.