he United States government claims that the United States of America, is a single sovereign nation;  while likewise claiming that it was always a national union, from 1776 onward.

But this was indeed never true; as every state was always a separate sovereign nation unto itself.

In reality, the American Revolution established the states as thirteen sovereign nations, by law, as originally declared in 1776:

And thereafter, every state was officially established as a separate sovereign nation under the 1783 Treaty of Paris:

…and the treaty was with the individual states as thirteen separate sovereign nations (i.e. "free, sovereign and independent states); it was not with the United States as a single nation.

Rather, in 1783, the United States was simply an international confederation of separate sovereign natio ns,  as formed in 1781: