The Oromo Nation is the community concerned with the nominated element. The Gadaa System has been practiced for centuries and remains functional into the present among all of the major Oromo clans such as Borana, Guji, Gabra, Karrayu, Arsi, Afran Qallo, Ituu, Humbana, Tulama and Macha clans in Oromia, East Africa.
The Oromo nation is one of the indigenous peoples of East Africa. Throughout long history it has developed its own culture, identity, religious cult and ritual performances. Irrecha means literally worshiping and praying to the Waaqa (Creator).