we have the Union of some name I haven't figured out yet for the EU style country where ther'es sort of a UK/Germany/France/Spain amalgamation, with similar cultures. This country which is in the West of Mer, and neighbors a Russia analog I haven't made up the name for yet. There's a China analog/Japan/India, etcetera to the far East, a middle Eastern place an Africa locale.

Mer MIGHT have an American like place and a mirror of our own cultures. Not to be boring but because I was thinking Mer is in another dimension, maybe it is in the same physical location as Earth, but is a dream realm of some sort. Another idea I have is that it's not a dream world but it's a world in another dimension that is influenced by the dreams of Earth denizens.