Then the Mongol invasion attempts against Japan worsened the situation, and the Kamakura bakufu was forced to strive to maintain its structure by actively exercising official authority in cooperation with the Imperial Court.
そこに元寇の発生が追い討ちをかけ、鎌倉幕府としても朝廷と連携しながら積極的に公権力の行使を行うようことで体制の維持を図る必要性に迫られた。