The Nilo-Saharan language family is a group of languages primarily spoken in northeastern Africa, particularly in regions around the Nile River and parts of the Sahara Desert. This family includes several languages, such as Dinka, Nuer, and Songhay, which are used by various ethnic groups in countries like Sudan, South Sudan, and Chad. Nilo-Saharan is divided into several branches, with the most notable being Niloitic, Saharan, and Central Sudanic. These languages share certain linguistic features, but they can vary significantly in vocabulary and grammar. The family is estimated to include over 200 languages, reflecting the rich cultural diversity of the region.