Does it make a difference that noone involved in that particular war was involved in the peace treaty?

Having just come back recently and skimmed through posts quickly to catch up I'm a bit confused by the connection between some of the civil wars. Were they all part of one big (if uneventful) war? If I were in the game before the session and declared war on some other unaligned senator for reasons completely unrelated to any of the other wars that were ongoing, and the same legislation was passed (without comment from me or my opponent) would my war be ended as well?

Just trying to understand how this type of legislation works now that precedent has been set for it.