Final answer:
The Tiv are an ethnic group found in Nigeria with a rich cultural heritage and agricultural economy. They speak the Tiv language and are noted for their social organization based on age grades and kinship.
Step-by-step explanation:
The Tiv are an ethnic group predominantly found in the central-eastern part of Nigeria, primarily in the Benue State and parts of Taraba State. They are known for their rich cultural heritage which is expressed through music, dance, and the visual arts. The Tiv people also speak a language known as Tiv, which belongs to the Bantoid branch of the Benue-Congo language family.
Historically, the Tiv were organized into a segmentary society without centralized political authority, but certain lineages held more power. Today, the group is still primarily agricultural with farming being the mainstay of their economy. Social relations among the Tiv are largely based on age grades, kinship, and marriage.