This is the 3242nd most frequent Korean word.
국가를
"국가를" means "the nation" or "the country" (accusative case).
Here, '국가를' is the object of the verb '노력합니다', meaning the efforts are directed towards the nation.
저는 항상 국가를 위해 노력합니다.
I always strive for the nation.
In this case, '국가를' serves as the object of the verb '여깁니다', denoting that the nation is considered important.
그 정치인은 국가를 중요한 가치로 여깁니다.
That politician considers the nation as an important value.
Here, '국가를' is again the object of the verb '이해하지 못합니다', emphasizing the subject's lack of understanding of the nation.