This passage below is a summary of how Igbos lost the civil service and other positions after the civil war.
Before 1966, Igbos dominated the civil service, military, academia and business. Not by way of marginalizing other tribes but by hard work.
After the civil war, the civil servants were not reinstated, the military was purged of Igbos, business men lost all funds and were given £20 max regardless of their pre-civil war bank account balance and the lucky ones in academia used their certificate to travel abroad (this is why my mother says finish school even if you want to be a musician) and this was the beginning of the brain drain problem.
