Why are Sudanese Arabs so dark?

Because working in the hot sun for generations is the reason to adapt to the environment.

Sudanese Arabs usually have quite dark skin and are easily mistaken for black people. In addition, I would like to remind you that some Saudi Bedouins (nomadic Arabs) who live in the desert are sometimes mistaken for black people because of their dark skin due to exposure to the hot sun every day.

At present, 33% of Saudi Arabia's population are foreigners, and blacks mainly come to Somalia, with nearly 70,000 people and 250,000 people in Sudan. However, all Sudanese are not necessarily black. North Sudan is Arab and South Sudan is black.

National development:

In addition to Arabs, the main ethnic groups in North Sudan are Nubians influenced by Arab culture, Jifeng people between the blue and white Nile, Fula people in the vast area of Darfur, and Behas people in the mountains between the Nile, atbara river and the Red Sea. Most northern Sudanese are engaged in agriculture and irrigated with Nile water; Some mainly focus on animal husbandry and run agriculture. The socio-economic structure is mainly influenced by Arabs. South Sudanese are mainly Dinka, Nuer, Shilluk, Bongo and Azande.