The samurai authority in Kamakura defeated the Imperial Court authority in the Jokyu Revolt, and thus the bakufu deployed Shugo and Jito (military governor and estate steward) in the territory of the Taira family, spread their authority across the country, and eventually established the first nationally-standardized military government.
幕府は承久の乱で鎌倉の武家権力が朝廷権力に勝利して、旧平家領にも守護地頭を起き支配権を全国に広げ、ついに初の全国統一の武家政権となった。