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In Goreo dynasty 우왕 ordered to yi-seong-gye. 우왕 order is attacking the 요동. So 이성계 went to 요동. But 이성계 turn back to 개경 at 개경. And he attack 고려. 최영 protect the attack, however 이성계 is win. At that time, 정몽주 is consevertive part. But 이방원, 정도전 is progressive part. 이방원 kill 정몽주, so progressive part is win. So they recommended the new country called 조선 to 이성계. So, 이성계 established the new country called 조선 in 1392. Also I about korean alphabet system called 훈민정음. 훈민정음 was invented by 세종. 세종 invented 훈민정음 because tpwhd want to teaching his people. And 세종 invented many things with 장영실. For example 혼천의, 앙부일구, 자격루, 수표 etc. Also he made 측우기 with 문종. They achived growth of economy and develop of science. So, 조선 was developed. I suprised at product of 장영실. I respect 장영실's wisdom. |