The Yoruba are the majority ethnic group living in south west Nigeria; there is a Yoruba minority in east Benin. They number approximately 20 million in all, and their language belongs to the Kwa branch of the Niger- Congo family. The Yoruba established powerful city-states in the 15th century, known for their advanced culture which includes sculpture, art, and music. The Yoruba kingdom was broken up in 1820 by an invasion of the Fulahs who captured the city of Ilorin. Research Yoruba