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
중세 시대에는 투석기를 사용하여 성을 공격했다.jungse sidaeeneun tuseokgireul sayonghayeo seongeul gonggyeokhaetta.In the medieval era, catapults were used to attack castles.