The Land of Whirlpools was an island nation located east of the Land of Fire's coast and west of the Land of Water's seas. It had originally been protected by Uzushio Village, founded by the Uzumaki Clan, and was allied with Konoha in the Land of Fire.
The Uzumaki Clan excelled at all kinds of Sealing Techniques. That had not been particularly remarkable during the Sengoku era, when no one had much pressing need for Sealing Techniques. Moreover, in terms of clan combat strength alone, the Uzumaki Clan ranked among the best, with the then-strongest Senju Clan as close relatives to rely on, so they had lived rather comfortably.
But storms could rise without warning, and misfortune could strike overnight.
With Senju Hashirama and Uchiha Madara joining forces, the Shinobi World's landscape changed dramatically. Within just a few years, the era of shinobi clans ruling separately became history, and the Five Great Shinobi Villages were established one after another.
Yet the Uzumaki Clan's leaders failed to keep up with the times. Despite their close ties with the Senju Clan, they did not join Konoha. Instead, they established their own village in the Land of Whirlpools.
That planted the seeds of their later disaster.
And the true fuse behind the Uzumaki Clan's destruction had actually been lit by the First Hokage, Senju Hashirama.
The Nine Tailed Beasts had existed for over a thousand years and had always been regarded as natural disasters. Only he believed they could be used as nuclear weapons and distributed them to other nations to maintain balance.
But then, if you were going to help someone, you might as well see it through.
Since you were already giving away Tailed Beasts, why not send along the most perfect Sealing Technique as well?
Here, there was no need