Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
양두정치의 원칙은 두 개의 권력이 서로 균형을 이루는 것입니다.yangdujeongchiui wonchigeun du gaeui gwonryeogi seoro gyunhyeongeul iruneun geosimnida.The principle of diarchial governance is that two powers balance each other.