In addition, the Joseon governing administration adopted a stringent isolationist coverage, earning the nickname "the hermit kingdom", but finally failed to guard alone against imperialism and was forced to open up its borders, commencing an era major into Japanese imperial rule. 3 of the commanderies fell or retreated westward in https://zander8zy5j.blogzet.com/helping-the-others-realize-the-advantages-of-korea-48720571