When to use to expand in Korean
Korean: 확대되다[ hwak-dae-doe-da ]

When to use it
확대되다 means something becomes bigger, wider, or larger. You can use it for things like pictures, screens, places, or services when they grow in size or area. In English, it is often like “be enlarged” or “be expanded.”
Example sentences
사진이 크게 확대되었어요.
The photo was enlarged a lot.
휴대폰 화면이 갑자기 확대되었어요.
The phone screen suddenly zoomed in.
우리 학교 도서관이 작년에 확대되었어요.
Our school library was expanded last year.
할인 행사가 다음 주까지 확대되었어요.
The sale was expanded until next week.
버스 노선이 우리 동네까지 확대되었어요.
The bus route was expanded to our neighborhood.
공원이 강 쪽까지 확대되었어요.
The park was expanded toward the river.