 The Igbo people are one of the largest ethnic groups in Africa . In rural Nigeria , Igbo people work mostly as craftsmen , farmers and traders . The most important crop is the yam ; celebrations take place annually to celebrate its harvesting . Other staple crops include cassava and taro . The Igbos are also highly urbanized , with some of the largest cities and metropolitan areas in Igboland being Onitsha , Enugu , Aba , Asaba , Owerri , Orlu , Nnewi , Port Harcourt , Umuahia , Abakaliki and Agbor . 
