[tom the eldest]

nah,there are civil war in arnor,but it was mainly rhudaur vs cardolan,arthedain still maintain peace,although maybe there are some difference with rhudaur.the witch-king is the one that make arnor fell,but maybe the harsher climate of the north that make arnor dont have as much population as gondro,i think that many northern men(of numenorean descent)move to gondor because of the climate in gondor is nicer.when angmar attack,arnor would have much less population than it used to be.