User blog comment:Cybberd1/New World Map Location Translations/@comment-5480911-20151011211709/@comment-5480911-20151013222352

The Katze Plains did not belong to anyone in the first place....but since it is a natural spawning for many of the new world's undead creature ...Ainz just took control of it along with carne village and E-Rental after the war was over....it is basically his anyways cause noone wanted to claim it anyway...that is why it was always used as a battleground so they won't deal with issues such as damage cost or civilian casualties.