noun
insularity
Refers to the quality of being isolated, narrow-minded, or inward-looking, often used in political, cultural, or social contexts. A relatively formal or academic term.
その島国のインシュラリティーが独自の文化を育んだ。
The insularity of that island nation fostered a unique culture.
彼の考え方にはある種の
A certain insularity can be seen in his way of thinking.