Pretty much what it says above:
The DNA is America were the revolution was avoided or won by Britain.
The USSA is, of course, a Godless Commie America.
The NAU is something like the European Union, i.e. several independent nations (not all of whom speak the same language) loosely banded together.
The EUA is the mirror image of OTL America. A country that fought a Revolution against France (supported by a Britain that eventually became a republic itself), and that still has a special relationship with the Kingdom of France.
The RoV is the country originally founded by Norse explorers.
The DNA is America were the revolution was avoided or won by Britain.
The USSA is, of course, a Godless Commie America.
The NAU is something like the European Union, i.e. several independent nations (not all of whom speak the same language) loosely banded together.
The EUA is the mirror image of OTL America. A country that fought a Revolution against France (supported by a Britain that eventually became a republic itself), and that still has a special relationship with the Kingdom of France.
The RoV is the country originally founded by Norse explorers.