This is the 927th most frequent Korean word.
일본의
"Japanese" or "of Japan."
The word 일본의 is used here to denote possession, indicating that the history (역사) pertains to Japan (일본).
저는 일본의 역사를 공부합니다.
I study Japan's history.
Here, 일본의 is employed similarly to demonstrate that the traditional culture (전통 문화) is associated with Japan.
일본의 전통 문화는 매우 흥미롭습니다.
Japan's traditional culture is very interesting.
In this sentence, 일본의 shows that the renown of the technology (기술) is attributed to it being from Japan.