 Complete the following phrase:  The Nasu clan ruled the Nasu district of northern Shimotsuke Province from the Kamakura period. During the late Sengoku period, partly for failing to participate in the 1590 Battle of Odawara, Toyotomi Hideyoshi divided their holdings, creating Nasu Domain 20,000 koku for the Nasu clan, and awarding their ancestral castle, Karasuyama Castle and 20,000 koku to Narita Ujinaga. The Narita were vassals of the Odawara Hōjō, who pledged allegiance to the Toyotomi after the fall of their liege. Ujinagas son Narita Ujitada fought on the side of Tokugawa Ieyasu against the Uesugi clan and in the 