Board Thread:Theories and Speculation/@comment-1872728-20160229033316/@comment-734582-20160308083217

QuakingStar wrote: @MIG, that's just Kishi's lazy writing on that part. The whole uzumaki thing was little more than a footnote to explain where they come from. If Kishimoto had written about everything people accused of `lazy writing` he´d still be writing.

As to the downfall of the Uzumaki: it's possible these other nations simply threw an unstable Jinchuriki or two against them, like the Hidden Mist tried against Konoha with Rin. It's very likely that Konoha was unable to respond to such an attack in time. It's unclear how many casualties there were, but it seems the Uzumaki were just plain decimated.