During the 1180's a civil war (Jisho-Juei War) to overthrow the Taira administration broke out, and the samurai government of MINAMOTO no Yoritomo (later to become the Kamakura bakufu), consisting of local ryoshu (samurai lord) and samurais in Kanto who were originally military aristocrats, won.
1180年代になると、平氏政権打倒を名目とした内戦（治承・寿永の乱）が起こり、最終的に、軍事貴族に出自し関東の在地領主層武士層を基盤とする源頼朝の武家政権（後の鎌倉幕府）が内戦に勝利した。