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
봉건주의는 중세 유럽에서 지배적인 사회 구조였습니다.bonggeonjui-neun jungse yureop-eseo jibaejeogin sahoe gujo-yeossseubnida.Feudalism was the dominant social structure in medieval Europe.