Well lets get technical
continents, 7 exist in the real world, a lot more in TW world, however the same principle applies
the two sides do not live in same K or share a K (that i know of, feel free to correct me, dont feel like looking)
so basically what you are saying is, if the UK and USA merged Forces to unite against a cheating threat and then during/after merge UK did not like it and they withdrew from said union, there is no civil war unless both sides turned on each other and commited war
again as far as i know, no one from FM has admitted to fighting the other side and infact have the same goal and mission, so where is the civil WAR in that
civil dispute, yes
civil differences yes
civil WAR NO
Ice, you need to read out side of the lines man, just because it is in a book or online does not mean that has to apply to your twisted version, for instance, those numbers you conveniently posted before each version of possible definitions, #1 applies to this scenario not #2
reason
#2would apply if say some of the south agreed with the north and left FM, then you would have a civil war in terms for reason of war but does not mean an actual war, until it starts