This is the 694th most frequent Korean word.
국가의
"National" or "of the state."
In this sentence, '국가의' is used to specify that the development in question pertains to the nation.
국가의 발전은 시민들의 노력에 달려 있습니다.
The development of the nation depends on its citizens' efforts.
In this case, '국가의' specifies that the history under discussion belongs to or relates to the nation.
국가의 역사는 문화와 전통을 포함합니다.
The history of a nation includes its culture and traditions.
Here, '국가의' is utilized to indicate that the interests belong to the nation.