적성은 원래 고려, 조선시대에는 파주, 연천과는 별도�?행정구역이었�? 삼국시대에는 백제와 고구려의 칠중현이었으�?신라 경덕�?�?중성현으�?개칭하고, 고려 �?적성현으�?고쳤�? If a grammatical basic principle that is definitely added to 서툴�?is often a vowel �?and there is no other selection other than a vowel �?then that grammatical theory can't be added to 서툴�? �? 삼성화재 https://thebookmarkage.com/story17568549/the-basic-principles-of-%EC%B6%9C%EC%9E%A5%EB%A7%88%EC%82%AC%EC%A7%80-%EC%82%AC%EA%B8%B0