One year after the proclamation of the constitution, the Imperial Diet session was opened, and Japan became a constitutional monarchy both in name and reality through the establishment of the party government in and after the Taisho Democracy.
憲法発布当初その1年後に帝国議会が開会し、大正デモクラシー以後の政党政治の確立によって、日本は名実共に立憲君主国となった。