What pivotal event in Japanese history led to the reassignment of Sunpu to Ieyasu's retainer in Shizuoka (city) in 1601 and marked the end of the Sengoku Period in Sekigahara, Gifu, leading to the Tokugawa Shogunate?

Question

Accepted Answer

Battle of Sekigahara. The town of Sekigahara is famous for the Battle of Sekigahara, which ended Japan's Sengoku Period and led to the founding of the Tokugawa Shogunate. After winning that battle, Tokugawa Ieyasu recovered Sunpu, now the city of Shizuoka, and handed it to his retainer Naito Nobunari in 1601.