After entering the secret chamber, Naruto learned the truth behind the destruction of the Land of Whirlpools from Genji.
The reason for the Land of Whirlpools' destruction could be summed up in four words: possessing a treasure brings disaster. Besides their Sealing Jutsu being coveted, Konoha had no small part in it as well.
Back then, the First Hokage's distribution of the tailed beasts appeared to have balanced the strength of the various nations.
But for the ninja villages that received tailed beasts, it was hardly good news. Not only did they have to worry about their Jinchuriki being taken away, they also had to constantly guard against the destruction caused by their Jinchuriki going berserk.
The First Shinobi World War had also made them realize that Jinchuriki were not easy to use.
Uncontrolled Jinchuriki would indiscriminately attack the surrounding ninja villages. They were a force that killed a thousand enemies at the cost of eight hundred of their own.
By comparison, Mito Uzumaki, the first Nine-Tails Jinchuriki, had performed exceptionally. She allowed Konoha to withstand the siege of the other great nations and directly brought the First Shinobi World War to an end.
After witnessing Mito Uzumaki's performance, Cloud, Kirigakure, and Iwagakure turned their attention to the Land of Whirlpools.
Taking advantage of Konoha being too preoccupied to care for its allies, they launched an attack on the Land of Whirlpools. After paying an enormous price, they obtained the Land of Whirlpools' Sealing Jutsu inheritance, allowing the three great nations to gain a method of stably controlling Jinchuriki.
After hearing this, Naruto asked curiously, "Did Konoha really not send any support at the time?"
Genji shook his head. "They sent some ninja, but they arrived when Kirigakure was withdrawing. It seemed they wanted to sell the Land of Whirlpools