 Complete the following phrase:  Around 1590, Toyotomi Hideyoshi asked the Ryukyu Kingdom to aid in his campaign to conquer Korea. If successful, Hideyoshi intended to then move against China. As the Ryukyu Kingdom was a tributary state of the Ming dynasty, the request was refused. The Tokugawa shogunate that emerged following Hideyoshis fall authorized the Shimazu familyfeudal lords of the Satsuma domain present-day Kagoshima Prefectureto send an expeditionary force to conquer the Ryukyus. The subsequent 