In the Meiji period, the Imperial household declared the Southern Court to be the legitimate Court, and the Ministry of Education, Culture, and Sports ordered that government-controlled textbooks begin using the term 'Yoshino period' instead of Nanbokucho.
明治時代には皇室は南朝が正統とされ、文部省は国定教科書で「吉野朝時代」の用語を使うよう命じた。