This is the 2388th most frequent Japanese word.
スーダン
Sudan (a country in Northeast Africa).
Here, 'スーダン' is the name of a country used as a subject in the sentence.
スーダンはアフリカにある国です。
Sudan is a country in Africa.
In this context, 'スーダン' is used as a descriptor for the culture associated with 'Sudan'.
私はスーダンの文化について学びたいです。
I want to learn about Sudanese culture.
Here, 'スーダン' refers to the location within which the experiences occurred.