Not sure what the fledgling nation mod is, but if you've got a nation mod, basically you'd just need to copy paste it several times and use new nation numbers. Unfortunately, if you're not going to even try to look at the modding commands, I'm not sure that will help you.
Instead, for zero effort, you might be more interested in Gandalf's "Mega Vanilla" mod, which (if "fledgling nation" is just using some nation defaults and you want to replicate it several times) sounds like it should be a similar end result.
Link:
http://forum.shrapnelgames.com/showthread.php?t=41415