This is the 16140th most frequent Korean word.
불러온
"불러온" means "called" or "brought about."
In this sentence, '불러온' is used as a modification to describe 'problems' that were caused or brought about due to the accident.
그 사고는 많은 문제를 불러온 원인이었다.
The accident was the cause that brought about many problems.
Here, '불러온' is used to indicate the results being caused or brought about by someone's actions.
그녀의 행동은 예상치 못한 결과를 불러온 것 같다.
Her actions seem to have brought about unexpected results.
In this example, '불러온' is utilized to signify 'significant changes' as the effects or outcomes brought about by the decision.