Why are some Nilo-Saharan languages endangered?

Several Nilo-Saharan languages are endangered primarily because their speakers have shifted toward other, more dominant languages for daily communication. This process often occurs when the domains of language use overlap to the extent that a smaller language becomes obsolete.1

Several factors contribute to these linguistic shifts:

• Prestige and Education: Languages with higher social or official status, such as Arabic, often exert pressure on smaller languages. For example, the Maban languages face pressure from Arabic, which is viewed as a prestigious language of education.1
• Displacement and Resettlement: Large-scale infrastructure projects, such as the construction of the Aswan High Dam, forced communities to relocate, increasing contact with dominant languages and reducing competence in ancestral tongues. Similarly, massive refugee movements have created new multilingual settings that can accelerate language shift.1
• Urbanization: Modern urban environments often act as a catalyst for the diffusion of dominant languages at the expense of others.1
• Small Speaker Populations: Languages spoken by ethnic groups with fewer than 1,000 speakers, such as the Kuliak language Nyang’i or the Nilotic language Okiek, are particularly vulnerable to these pressures.1