This is the 5296th most frequent Korean word.
대하여
"대하여" means "about" or "regarding."
In this sentence, '대하여' is used as part of '에 대하여', meaning 'about' or 'concerning'. It establishes the subject or topic (environmental issues) for the discussion.
우리는 환경 문제에 대하여 토론했습니다.
We discussed about the environmental issues.
Here, '대하여' signifies the topic (economics) being explained in the book, demonstrating its role in specifying the subject matter.
이 책은 경제에 대하여 자세히 설명합니다.
This book explains in detail about economics.
In this usage, '대하여' serves to show the topic (history) that the interest is centered upon, highlighting its application in expressing a subject of sentiment.