 Complete the following phrase:  The location of Saga Castle was originally a fortified village under the control of the Ryūzōji clan, warlords of a small area of northern Kyūshū in the Muromachi period. After Ryūzōji Takanobu was defeated by a coalition of Shimazu and Arima forces in 1584, his retainer Nabeshima Naoshige gained control of the castle. Naoshige allied the clan with Toyotomi Hideyoshi and gained personal distinction during the 