first, there was anarchy, and from anarchy came the state. why did there come a state? because of lack of consciousness. as the state shifts, people become aware of themselves and their surroundings, and thus the state and situations shift even more. eventually, people become fully awakened, and organize in a way which is beneficial to them and the maintaince of consciousness. this is inevitable as Karl Marx said. it is the nature of dialectics. of course Marx's ideas were very primitive and limited themselves to class struggle. he did understand that there would be new kind of consciousness and spiritual needs, but he did not elaborate, and this is the mistake of modern Marxism.
so why would there be a fight between ethnic groups? wouldn't that be characteristic of a primitive phase? it definately isn't characteristic of anarchism as an advanced phase. consciousness develops and eventually it reaches a state where it doesn't go back to what it was before unless there was some kind fo radical change. if the poles shifted and huge storms rip up the earth (i mention this because it may actually happen), the surviving people/species might return to a primitive phase.