This is the 10582nd most frequent Korean word.
국적인
"국적인" means "nationality-related" or "pertaining to nationality."
Here, '국적인' is used as an adjective describing '관점 (perspective)' to mean 'national'.
그는 국적인 관점에서 그 문제를 바라보았다.
He viewed the issue from a national perspective.
In this sentence, '국적인' describes '자부심 (pride)', emphasizing that the pride is related to the nation.
나는 국적인 자부심을 느꼈다.
I felt a national pride.
Here, '국적인' is modifying '아이디어 (idea)', describing that the idea pertains to the nation or country.