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
한국의 광역화는 경제 발전에 중요한 역할을 하고 있다.Hanguk-ui gwangyeokhwa-neun gyeongje baljeon-e jungyohan yeoghal-eul hago itda.The regionalization of Korea plays an important role in economic development.