Horn of Africa (Ethiopia: 96.6 million, Somalia: 10.4 million, Eritrea: 6.4 million, and Djibouti: 0.81 million). Regional studies on the Horn of Africa are carried out, among others, in the fields of Ethiopian Studies as well as Somali Studies. This peninsula is known by various names. In ancient and medieval times, the Horn of Africa was referred to as the "Bilad al Barbar" ("Land of the Berbers"). It is also known as the "Somali peninsula", or in the Somali language, "Geeska Afrika", "Jasiiradda Soomaali" or "Gacandhulka Soomaali". In other languages that are local or adjacent to the Horn of Africa, it is known
Horn of Africa Bantu groups also speak variants of the Niger-Congo Swahili and Mushunguli languages. The countries of the Horn of Africa have been the birthplace of many ancient, as well as modern, cultural achievements in several fields including agriculture, architecture, art, cuisine, education, literature, music, technology and theology. Ethiopian agriculture established the earliest known use of the seed grass teff ("Poa abyssinica") between 4000–1000 BCE. Teff is used to make the flatbread injera/taita. Coffee also originated in Ethiopia and has since spread to become a worldwide beverage. Ethiopian art is renowned for the ancient tradition of Ethiopian Orthodox Christian iconography stretching back