Welcome to the Genocide Club

[Reverend Joe]

There are plenty of nations which were formed without genocide. A few examples off the top of my head:
- France (was united and got its national image etc etc during their defense against the English in the 100 years war)
- England (formed by an invasion - major resistance pretty much ended after Battle of Hastings due to lacking support for Harold and the prior dynasty, the locals at that time didn't think it mattered much to become ruled by the Norman dynasty)

I hate to nitpick, but:

-France was actually formed, not necessarily via genocide, but after decades of warfare against, and forced conversion of, the Saxon tribes to the East, during the reign of Charlemagne. Germany could trace her basis to this conquest, as well.

(Edit: if we follow Meneldil's official definition, then I guess the Saxon conquest doesn't count.)

-England was really formed during the Anglo-Saxon period, which could probably fall into the category of "genocide" if we are drawing a line in the sand; William the Bastard really just inherited an intact structure via conquest, and made a few cosmetic changes after he had to suppress several Saxon rebellions. Speaking of which, surely the "Harrying of the North" could count as genocide?