Answer:
1- Sahara is a desert area in North Africa approximately between the 15th and 30th northern latitudes. With its approximately 8,600,000 square kilometers, Sahara is the world's largest desert area outside the two polar regions. The Sahara consists of sandy deserts, rocky deserts and dryland areas. It is an area that has long been an impermeable barrier between the Mediterranean region and "Sub-Saharan Africa".
2- Sahel is the biogeographic and climatic transition zone located between the Sahara in the north and the Sudanese savannah belt in the south. The area has a semiarid climate and extends throughout the African continent from the Atlantic Ocean in the west to the Red Sea in the east. The area is sparsely populated, and traditionally most of the population has been nomads who move the animals to pasture.
3- A savannah is a tropical or sub-tropical grass landscape with scattered tree growth. In a savannah, grass is the predominant vegetation mixed with herbs. Similar landscapes in the temperate zone are usually referred to by other names: steppe, pampa, prairie, forest steppe, pusta, tundra or desert steppe.
4- Animism is the belief that animals, plants, inanimate objects, and natural phenomena have souls or are kind of spiritual beings. None of the major world religions are fully animistic, but most primitive, vernacular and tribal religions are forms of animism.
5- A griot is a poet and musician in West Africa, and is regarded as a keeper and narrator of orally transmitted traditions and history. Many West African tribes, such as Fulbe, Hausa, Tukulor, Wolof, Serere and smaller tribes, have griots.
6- The Nok culture appeared in central Nigeria around 1500 BC and disappeared under unknown circumstances at the turn of our era. It was a population of cultivators and gatherers of wild plants.
7- Djenne-Djeno is a ruin hill about three kilometers southeast of Djenne in what is now Mali. It is the predecessor city of Djenne and one of the oldest urban centers south of the Sahara.
