This is the 1138th most frequent Korean word.
문제로
"문제로" means "as a problem" or "regarding a problem."
In this sentence, '문제로' is used to mean 'as a problem', indicating the manner in which the homework is being regarded by the subject.
그는 숙제를 문제로 삼지 않았다.
He did not consider the homework as a problem.
Here, '문제로 인해' means 'due to a problem', where '문제로' defines the cause or reason for the action following it.
문제로 인해 회의가 연기되었습니다.
Due to a problem, the meeting was postponed.
In this example, '문제로' is used in the sense of 'with regard to the problem', focusing the discussion topic towards the mentioned issue.