개화가 · 개화를
enlightenment, modernization
Example
개화를 주장한 사람들은 서양의 기술을 배우자고 했어요.
Those who called for enlightenment urged learning Western technology.
Word parts
개 open+화 change
Literally 'opening up and changing'.
Good to know
Homonym: 개화 also means flowers blooming, written with different characters.