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
계급 투쟁은 사회의 불평등을 해결하기 위한 중요한 과정이다.gyegeup tujaengeun sahoeui bulpyeongdeungeul haegyeolhagi wihan jungyohan gwajeongida.Class struggle is an important process to address social inequalities.