Immediate causes Causation of the war in 1966 included Cause_to_be_included ethno-religious riots in Northern Nigeria , a military coup , a counter-coup and persecution of Igbo living in Northern Nigeria .

The protests broke out Process_start when thousands of Igbo women from the Bende District , Umuahia and other places in eastern Nigeria traveled Traveling to the town of Oloko to protest against the Warrant Chiefs , whom they accused Judgment_communication of restricting the role of women in the government .

The protest encompassed Surrounding women from six ethnic groups ( Ibibio , Andoni , Orgoni , Bonny , Opobo , and Igbo ) .