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
문명권의 발전은 인류의 역사에 큰 영향을 미쳤다.munmyeonggwon-ui baljeon-eun inryu-ui yeogsa-e keun yeonghyang-eul michyeotda.The development of the civilization sphere has greatly influenced the history of humanity.